Scalp Inergy Ultra-Light Conditioner

In the US, ingredients above 1% are listed from most to least. Below 1% they can appear in any order. Each note keeps three things apart: what the ingredient generally does, its role in this type of product, and what its position can tell you.

• 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 here, the order stops meaning much. These are usually 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, so check the package in your hand when an ingredient matters to you.