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Side by side

Design Essentials Agave & Lavender Serum vs Design Essentials Silk Essentials Thermal Strengthening Serum

12 of 12 functions match Formula overlap 78%. Design Essentials Agave & Lavender Serum and Design Essentials Silk Essentials Thermal Strengthening Serum share 3 ingredients among each other's most prominent.

Based on your consultation

Which of these fits your hair?

We check your pattern, moisture need, scalp, fragrance tolerance, weight sensitivity and more against each formula — and say which one lines up.

Your profile at a glance

  • Your answers appear here
  • Your answers appear here
  • Your answers appear here
  • Your answers appear here

When each one is the right call

What each formula is built for, from its own ingredient list.

  • Agave & Lavender Serum — protein-sensitive hair
  • Silk Essentials Thermal Strengthening Serum — protein-sensitive hair

Side by side

Every trait, aligned

One row per trait, read from each product’s own ingredient list and record. A dash means we have not researched that field for that product — it is not a “no”.

Trait
Design Essentials Agave & Lavender Serum — 4 oz container Design Essentials

Agave & Lavender Serum

  • Finisher
  • Drugstore
  • Sulfate-free
  • Protein-free
Design Essentials Silk Essentials Thermal Strengthening Serum — 4 oz container Design Essentials

Silk Essentials Thermal Strengthening Serum

  • Finisher
  • Masstige
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
about $9 4 oz · $2.25/oz
$17–23 4 oz · $5.21/oz
Value / price positioning
Lower cost than most serums $$$$$ Drugstore tier · costs less than 90% of the 79 serums we’ve priced
Priced with its peers $$$$$ Masstige tier · costs less than 67% of the 79 serums we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Moisture level Same
None found No humectants found — nothing here pulls water into the hair. Your hair
None found No humectants found — nothing here pulls water into the hair. Your hair
Shine system Same
High A silicone or oil blend does the shine work here. Your hair
High A silicone or oil blend does the shine work here. Your hair
Slip / detangling
Some Some slip, mostly from esters or silicones rather than conditioners. Your hair
Some Some slip, mostly from esters or silicones rather than conditioners. Your hair
Weight on hair Same
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Fragrance
Present Fragrance is listed; it sits below the working ingredients. Your hair
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Protein Same
None No protein or amino acids in the list. Your hair
None No protein or amino acids in the list. Your hair
Silicone / wax buildup Same
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Moderate Your hair
Moderate Your hair
Oils and butters Same
None No oils or butters in the list. Your hair
None No oils or butters in the list. Your hair
Fast-drying alcohol Same
None No fast-drying alcohol in the list. Your hair
None No fast-drying alcohol in the list. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Protein-sensitive hairthat stiffens when protein is added
  • Dull-looking haira recognised shine system is present
  • Very dry hairno fast-drying alcohol in the list
  • Sun and colour fadea UV filter is in the list
  • Protein-sensitive hairthat stiffens when protein is added
  • Dull-looking haira recognised shine system is present
  • Very dry hairno fast-drying alcohol in the list
  • Sun and colour fadea UV filter is in the list
Why you might skip it
  • Scents bother youthis product carries a light scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.
More facts about each one
Type
Finisherserum
Finisherserum
Where to buy
Ulta · Brand website
Ulta · Brand website
Free of
  • sulfate-free
  • protein-free
  • sulfate-free
  • protein-free
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described

Facts as we recorded them. A dash means we have not researched that field for that product — it is not a "no".

The bottom line

The bottom line depends on your hair

Which of these two suits you is a question about your hair, not about them. The consultation answers it — and tells you what your routine needs around it.

Take the consultation

$49.00 once, for your consultation and hair profile. No subscription, no required purchases.

The detail behind the table

Where the readings above come from: the ingredient lists themselves, each brand’s claims checked against them, what owners report, and cost per ounce in context.

Shared and distinct ingredients

Shared and distinct ingredients

Computed from the ingredient lists as printed. "Shared" means both lists carry it; where it sits on each label is stated, because position is what tells you how much.

What both formulas carry

IngredientAgave & Lavender SerumSilk Essentials Thermal Strengthening Serum
Isopropyl Palmitate
Shine
#1Leading
#1Leading
C13-15 Alkane
Shine
#2Leading
#2Leading
Dimethiconol
Buildup
#3Leading
#3Leading
Ethylhexyl Methoxycinnamate
Neutral
#8Supporting
#5Below the 1% line
Fragrance
Fragrance
#9Below the 1% line
#4Below the 1% line

What only one of them carries

Full ingredient list — Agave & Lavender Serum (9)
Full ingredient list — Silk Essentials Thermal Strengthening Serum (10)

What owners say

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings, and we never balance one product’s themes against another’s by inventing them.

Both praised for shine.

Agave & Lavender Serum

Shiny, lightweight, no buildup

Light texture, pleasant scent, no weigh-down

Small amount goes a long way

Shipping damage complaint

Silk Essentials Thermal Strengthening Serum

Reduces smoke/damage while flat ironing

Adds shine without weighing hair down

Silky, non-liquid texture preferred over sprays

Long-time repeat use, brand loyalty

Price check

Cost per ounce, in context

Cost per ounce against every product of this type we have priced, each at the size it is most often sold in. Value labels are computed from that percentile and from how many products that do the same job cost less; they are comparisons, not judgements about a brand.

$2.25/oz vs $5.21/oz — Design Essentials Silk Essentials Thermal Strengthening Serum costs about 2.3× more per ounce than Design Essentials Agave & Lavender Serum.

$0.02/oz median $9.41/oz $41.54/oz $2.25/oz Agave & Lavender Serum $5.21/oz Silk Essentials Thermal St

Every mark sits on one distribution because these are compared against the same set: 79 serums with a computable unit price.

Value readAgave & Lavender SerumSilk Essentials Thermal Strengthening Serum
Label
Lower cost than most serumsCosts less per ounce than most serums we have researched.
Priced with its peersSits in the middle of the range for serums per ounce.

Computed from cost per ounce against every product of this type we have priced, and from how many products that do the same job cost less. It is a comparison, not a judgement about the brand.

Compare with something else

Close formulas to each of these, as their own comparison pages.

Agave & Lavender Serum · Silk Essentials Thermal Strengthening Serum · All serums in the library

How this page was made

  • This page is assembled from the same researched records the individual product pages render: identity, each ingredient list as printed, each brand's own claims, dated price observations, and review themes written in our researchers' own words. Nothing on it is written per comparison.
  • We do not rank these against each other. Which of them suits you depends on your hair, and that is what the consultation works out.
  • The formula similarity percentage is a stored, precomputed number: position-weighted overlap of the two ingredient lists blended with agreement on the attributes we derive. It measures how alike two formulas are, not how well either works.
  • 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.
  • 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.
  • 2 sources were consulted across the products on this page.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice. We do not sell these products and take no placement fees.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.

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