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Nexxus

Scalp Inergy Ultra-Light Conditioner

Conditioner / Everyday rinse-out, detangling

  • Conditioner
  • Sulfate-free
  • Silicone-free
  • Curly-method
Size8.45 fl oz
Price$8.57seen at one store · 8.45 oz
Price / oz$1.69/ozat 8.45 oz

Scent:

The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.

Manufacturer page: sleekshop.com

Personal fit

Is this right for you?

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Upper-mid price for a conditioner

$1.69/oz at 8.45 oz — more than 53% of the 689 conditioners , which mostly run $0.91–3.10/oz. The cost less.

Price and stores

Great for

Maximum slipfor hair that tangles the moment it is wet
Curly-method routinesno sulfates and no water-insoluble silicones
Silicone-free routinesno silicones appear in the list
Very dry hairno fast-drying alcohol in the list
Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
A wide range of haira middle-of-the-range weight

Maybe skip if

this product carries a scent
Picking it up locallywe have it recorded in one channel only

Whether this much richness is right for you depends on your strand thickness, porosity, and how easily your hair flattens — that is what the consultation works out.

What the formula actually does

Read from the label, not the marketing

Each row says where it comes from: F means we derived it from this product’s own ingredient list, S means it is a claim the brand makes that the formula neither confirms nor contradicts.

Slip and detangling High

Conditioning agents sit high in the list — this is a detangling formula.

Oils and butters None

No oils or butters in the list.

Weight on the hair Medium

Middle of the range — noticeable on fine hair, light on coarse hair.

Water-binding (humectants) Moderate

Humectants in the working part of the formula.

Protein Minor

Protein appears, low enough to be a supporting ingredient.

Needs detergent to remove No

Nothing here needs a detergent wash to remove.

Hard-water defence None

No chelating agent in the list.

Fragrance Prominent

Fragrance sits in the first eight ingredients — a larger share of the formula.

from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.

Ingredients that matter

The ingredients that change a decision

The workhorse ingredients plus anything lower down that changes a decision. These chips name what an ingredient does — they are not safety scores, and no ingredient here is rated good or bad on its own.

IngredientWhat it doesWhy it mattersChip
Water solvent The base everything else is dissolved in Neutral
Cetearyl Alcohol fatty alcohol Thickens and conditions — not a drying alcohol Softens
Stearamidopropyl Dimethylamine conditioning agent Conditions and softens — this is what makes it comb through Detangles
Cetyl Esters light ester Light slip without much weight Softens
Fragrance fragrance The scent Fragrance
Phenoxyethanol preservative Keeps the product from spoiling Stabilizes
Methylparaben paraben Stabilizes
Propylparaben paraben Stabilizes
Hydrolyzed Keratin film former A supporting film former Protein
What the list leaves out, and what it carriesThe list carries no sulfates, silicones, or drying alcohols. Fragrance is on the label.
Full ingredient list (13)

US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order. Annotations keep three readings separate: the ingredient's general function, its role in this product type, and what its position can support.

  • 1 Water
    General function

    The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    • solvent
  • 2 Cetearyl Alcohol
    General function

    A waxy fatty alcohol - nothing like drying alcohol. It gives conditioners their body and leaves a soft, smoothing film on the hair.

    Role in this product type

    In conditioner, cetearyl alcohol gives the emulsion its creamy structure and helps it spread evenly through the hair. Its emollient layer adds slip and a smoother feel.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    May suitDry, coarse, or high-porosity hair

    May suit dry, coarse, or high-porosity hair that benefits from added slip and a more substantial conditioning film.

    May suitFrizz-prone, damaged, or high-friction hair

    Deposits with the cationic conditioners and helps them lie flat along the strand, which is where the detangling actually comes from.

    DependsFine or easily flattened hair

    Consider if hair is fine or easily flattened: a formula built heavily around fatty alcohols can feel richer than a lightweight conditioner.

    BASF
    • fatty alcohol
    • emollient
    • thickener
  • 3 Stearamidopropyl Dimethylamine
    General function

    A gentle conditioning agent activated by the acid in the formula. It smooths the cuticle without much build-up.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    May suitFrizz-prone, damaged, or high-friction hair

    A cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.

    May suitVery dry or highly damaged hair

    The class that does the detangling in a conditioner. It deposits lubrication where the cuticle is worn.

    DependsBuild-up-sensitive routines

    Substantive by design. A routine with no detergent wash gives it nothing to leave with.

    PubChem
    • conditioning agent
  • 4 Cetyl Esters
    General function

    A waxy ester blend that replaces spermaceti in creams. It thickens and leaves a smooth, non-greasy finish.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitFine or easily flattened hair

    A light emollient: it softens the surface with noticeably less weight than an oil or a butter.

    May suitFrizz-prone, damaged, or high-friction hair

    Spreads thin and lowers friction between strands without the heaviness of a fixed oil.

    • light ester
    • emollient
    • thickener
  • Below about this point, order stops being meaningful — these are typically used at 1% or less.
  • 5 Fragrance
    General function

    An undisclosed blend of scent ingredients. Regulations let it stay unlisted, so a fragrance-free product is the only way to be certain what is not in it.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May not suitFragrance-sensitive routines

    Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

    • fragrance
    • declared fragrance
  • 6 Phenoxyethanol
    General function

    The most common modern preservative; it keeps the product free of bacteria and mould. It sits well below 1% of the formula.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    PubChem
    • preservative
  • 7 Methylparaben
    General function

    A long-established preservative. Many brands have replaced parabens with newer systems for marketing rather than safety reasons.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    PubChem
    • paraben
    • preservative
  • 8 Propylparaben
    General function

    A long-established preservative. Many brands have replaced parabens for marketing rather than safety reasons.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    • paraben
    • preservative
  • 9 Panthenol
    General function

    Provitamin B5. It draws in water and penetrates the strand a little, which is why it is the standard ingredient for softness and shine claims.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitFine or easily flattened hair

    It hydrates without adding oil or a film, which is the combination fine hair usually needs.

    May suitFrizz-prone, damaged, or high-friction hair

    Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.

    May suitVery dry or highly damaged hair

    A humectant that also penetrates the cuticle, so it holds water inside the strand rather than only on the surface.

    PubChem
    • humectant
    • conditioning agent
    • vitamin
  • 10 Hydrolyzed Keratin
    General function

    Fragments of the same protein hair is made of. They fill gaps on damaged strands and make hair feel firmer for a few washes.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitFrizz-prone, damaged, or high-friction hair

    Filling surface gaps evens out the cuticle, which is part of what makes damaged hair comb and reflect light more like undamaged hair.

    May suitMaximum-hold styling

    Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.

    DependsCurls or waves needing flexible hold

    How rigid the finish is depends on which polymer it is and what the formula pairs with it, not on there being one.

    International Journal of Cosmetic Science
    • film former
    • protein
    • hydrolysed protein
  • 11 Arginine
    General function

    An amino acid that holds water and carries a positive charge, so it is drawn to damaged spots on the strand.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitVery dry or highly damaged hair

    Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

    DependsClimate-sensitive or frizz-prone hair

    A humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.

    DependsProtein-sensitive hair

    The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.

    PubChem
    • amino acid
    • humectant
  • 12 Citric Acid
    General function

    Used to bring the product to a slightly acidic pH, which helps the cuticle lie flat. It is almost always near the end of the list.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitBuild-up-sensitive routines

    Holds hard-water minerals in solution so they rinse away instead of depositing on the hair.

    May suitFrizz-prone, damaged, or high-friction hair

    The acid side of pH adjustment, and the reason it matters is measured: alkaline formulas raise the fibre's surface negative charge, increase friction between strands and lift the scales, while lower-pH ones do the reverse.

    May suitGray, silver, or brass-prone hair

    Where a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.

    International Journal of Trichology
    • pH adjuster
    • hard-water chelator
  • 13 Sodium Hydroxide
    General function

    A strong base used in trace amounts to raise pH; fully neutralised in the finished product.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    DependsFrizz-prone, damaged, or high-friction hair

    The alkali half of a pH-adjusting pair, used in small amounts to bring a formula up to its target rather than to make it alkaline. Alkaline conditions raise the fibre's surface charge and lift the scales — but the finished pH is not on the label.

    International Journal of Trichology
    • pH adjuster

What the whole list adds up to

  • 3 preservatives
  • 2 emollients
  • 2 thickeners
  • 2 parabens
  • 2 humectants
  • 2 pH adjusters
  • 1 solvent
  • 1 fatty alcohol
  • 1 conditioning agent
  • 1 light ester
  • 1 fragrance
  • 1 declared fragrance
  • 1 conditioning agent
  • 1 vitamin

Ingredient list captured 2026-09-04. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 8.45 oz

Seen at $8.57 lowest of 2 stores · checked Sep 5
Good value under $6 Under $0.66/oz it costs less than three-quarters of the 8 products we score as doing the same job

Priced above the products that do the same job. Stores sell it above the $6 line; products that do this job typically go for about $7 at this size.

Show the price ladder
Where we’ve seen it2 listings · 2 stores
  • Sleekshop.com
    $8.57
    8.45 oz · $1.01/oz
    Sep 5Lowest per oz
  • Target
    $19.99
    8.45 oz · $2.37/oz
    Sep 5Sale · was $25.00

Sorted by price per ounce. Dated observations from our research, not live prices. Direct store pages, no affiliate links. We don’t sell this product.

How we work this out
  1. 8.45 oz is the size stores list most often; every comparison on this page is made at it. Other sizes are shown in the Sizes row and the store list.
  2. Seen at $8.57 is the price we have observed for the 8.45 oz. We need three stores before we call a price commonly seen.
  3. Good value under $6 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $0.66/oz; at 8.45 oz that is $6. Under that line you are paying less than most of them.
  4. About $7 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 8.45 oz.

Formula

Formula score
9 of 10

A complete read of the format at an ordinary price: mid-range per ounce among conditioners, with the working systems present.

How the score is counted
  • 5 products that do the same job cost less per ounce
  • Costs more per ounce than 53% of the 689 conditioners we’ve priced
  • Covers 5 of the 6 things a conditioner should do
  • Reviewers mention 3 recurring complaints
  • Conditioning agents up frontWhat makes wet hair comb through.3 pts
  • Oils or butters in the working zoneSoftens the strand rather than just coating it.2 pts
  • Slip for detanglingReduces the force it takes to comb wet hair.2 pts
  • A humectantBinds water into the hair.1 pt
  • A pH adjusterBrings the formula to the acidic pH hair prefers.1 pt
  • Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt

The formula score is completeness for the job: the share of the systems this product type is normally built around that we can find in this list, weighted. It is not efficacy, not quality, and it never compares across product types.

Does the same job, for less

Same derived functions — what it cleans, conditions, coats or holds — at a lower cost per ounce. Scent, texture and where you buy it can still differ.

MatrixClosest function High Amplify Conditioner $0.99/oz $0.70/oz less
  • Curly method
  • Silicone-free
  • Medium weight
Function
  • Film formers
Also
  • Salon tier
  • 10.1 oz bottle
Compare
NativeClose function Native Daily Clean Conditioner - Santal & Leather $0.67/oz $1.02/oz less
  • Protein-free
  • Curly method
  • Silicone-free
Function
  • Protein
Also
  • Amber scent
  • Cruelty-free
  • Vegan
Compare
NativeLowest cost per oz Native Full & Thick Conditioner - Sandalwood & Coconut $0.64/oz $1.05/oz less
  • Protein-free
  • Curly method
  • Silicone-free
· Close function
Function
  • Protein
Also
  • Cruelty-free
  • Vegan
  • Drugstore tier
Compare

See more alternatives in the product library

These are functional neighbours, not personal recommendations — they are close on formula, not chosen for anyone. Get the one that fits your hair, routine, and budget

Suits every hair pattern

Final decision

Should you buy it?

A solid pick for the hair it suits
Best user

People who want maximum slip, looking for real detangling slip and a curly-method-compatible formula

Biggest tradeoff

Worth skipping for anyone sensitive to fragrance or anyone who wants to pick it up locally

We do not sell products or take placement fees. This page states what the formula and the prices show; the consultation is what matches it to a person.

Claims check

What the brand says, against what the formula shows

Claims are quoted from the brand. We only mark one supported, partly supported, or conflicting when the ingredient list actually speaks to it; everything else stays "stated by the brand", which is not a criticism — most claims simply cannot be read off a label.

1
SupportedBacked by ingredients
2
Partly supportedSome supporting logic
1
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
The secret to body without the burden

A mid-weight formula: it will not flatten fine hair, but lift is not its main job.

  • Hydrolyzed Keratin
Partly supported

Neutral on lift.

ProteinFusion blend of Wheat Protein and Ginger Root

A named-ingredient story. What matters is where those sit in the list — see the ingredients table.

  • Panthenol
  • Hydrolyzed Keratin
Stated by brand

Check the position, not the name.

Plant-based, silicone-free, and paraben-free

No silicones appear in the ingredient list.

Supported

Nothing that needs a strong wash.

Ultra-lightweight volume for thin, fragile, or fine hair

A mid-weight formula: it will not flatten fine hair, but lift is not its main job.

  • Hydrolyzed Keratin
Partly supported

Neutral on lift.

How to read this

We look at the first 10–15 ingredients and what they do in a formula — not marketing. If the list doesn't speak to a claim, we don't assume.

Reviewers

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings.

Reviewers with fine, limp or fragile hair say the conditioner is genuinely lightweight and leaves hair soft and moved without any heaviness or residue.

reviewers who received the product free through influenster.com for testing, describing fine or fragile hair

Some reviewers with fine or oily hair said it still weighed hair down and left residue, contradicting the product's weightless/lightweight positioning.

reviewers with fine, limp, and oily hair

Multiple reviewers were surprised by a strong, heavy perfume-like scent, with a couple reporting fragrance sensitivity or allergy concerns.

reviewers sensitive to fragrance

Several reviewers with dry, damaged or thick/coarse hair say it didn't moisturize enough, leaving hair feeling dry, flat, or under-conditioned even after use.

reviewers with damaged, color-treated, or thick fine-stranded hair

A few reviewers described the formula as unusually thin and watery, running out of the bottle quickly and requiring extra product to feel effective.

reviewers commenting on the conditioner's texture and consistency

More from Nexxus

How this page was made

  • Everything above is generated from our researched product record — identity, the ingredient list as printed, the brand's own claims, dated price observations, and review themes written in our researchers' own words. No part of this page is written per product.
  • The value band is a fixed label over two stored numbers: this product’s cost per ounce as a percentile of every product of this type we have priced, each at the size it is most often sold in, and how many products we score as doing the same job cost at least a quarter less per ounce.
  • Both scores out of ten are defined on this page. The formula score is completeness for the job, computed from a fixed per-format checklist shown beneath the gauge; the price score is cost per ounce against every product of this type we have priced.
  • The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
  • 5 sources consulted for this product (0 manufacturer or regulatory, 5 retailer, 0 editorial), last checked 2026-09-04.
  • Ingredient references are linked for 7 of 9 product-aware annotations on this page. Fit notes are conditional formulation guidance, not a conclusion about the finished product or about you.
  • We have not tested this product in a lab and we do not physically test your hair. Formula readings come from the ingredient list; behaviour claims are labelled as the brand's.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice.
  • Ingredient names link to our ingredient library, where each entry shows what it does, which product types use it, and where it usually sits on a label across everything we have researched.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
  • Formula readings: derivation v22. Record last updated 2026-09-05.