Treatment Light

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 Cyclopentasiloxane · Cyclomethicone
  General function

  A light, fast-evaporating silicone that spreads other ingredients then leaves. It gives serums their weightless glide.

  Leading ingredient

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

  May suitBuild-up-sensitive routines

  It leaves the hair by evaporating rather than by being washed off, so it is not part of what accumulates.

  May suitClimate-sensitive or frizz-prone hair

  A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

  May suitFine or easily flattened hair

  A cyclic silicone evaporates after it has spread the formula, so it carries the other ingredients without leaving weight behind.

  PubChem
  • silicone
  • emollient
• 2 Dimethicone
  General function

  The most common conditioning silicone. It coats the strand for shine, slip, and frizz control, and needs a detergent (not just water) to wash out.

  Role in this product type

  In a finishing oil, dimethicone spreads as a smooth, low-friction layer over the hair surface. It improves slip, reduces flyaways, and creates a glossier finish.

  Leading ingredient

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

  May suitClimate-sensitive or frizz-prone hair

  A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

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

  May suit frizz-prone, damaged, or high-friction hair that benefits from surface smoothing and added slip.

  DependsBuild-up-sensitive routines

  Consider cleansing habits: dimethicone is not water-soluble, so repeated use may leave more deposited film than a low-detergent routine removes.

  Dow
  • silicone
  • emollient
  • conditioning agent
• 3 Argania Spinosa Kernel Oil · Argania Spinosa (Argan) Kernel Oil
  General function

  Argan oil. A medium-weight oil used for shine and softness on the outside of the strand.

  Leading ingredient

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

  May suitDry, coarse, or high-porosity hair

  Coats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.

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

  A thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.

  May not suitFine or easily flattened hair

  Near the top of a list an oil is weight before it is anything else, and fine hair shows that first at the roots.

  • oil
  • emollient
• ▾Below about here, the order stops meaning much. These are usually used at 1% or less.
• 4 Fragrance · Parfum/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
• 5 Linum Usitatissimum (Linseed) Seed Extract
  General function

  Flaxseed gel. A natural polysaccharide that gives soft, flexible hold in curl products.

  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 suitCurls or waves needing flexible hold

  A polysaccharide film stays softer than a synthetic one as it dries, which is what leaves a curl defined but still able to move.

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

  A soft film binds neighbouring strands together, which is most of what helps flyaways lie down.

  May not suitMaximum-hold styling

  Gum films stay soft. A style that needs firm fixation usually wants a synthetic polymer doing the holding.

  • gum
  • film former
  • botanical extract
• 6 Ci 26100 (Red 17)
  General function

  A certified colour that tints the product itself. It does not colour hair.

  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 suitGray, silver, or brass-prone hair

  A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.

  • colourant
• 7 Ci 47000 (Yellow 11)
  General function

  A certified colour that tints the product itself. It does not colour hair.

  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 suitGray, silver, or brass-prone hair

  A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.

  • colourant

What the whole list adds up to

• 3 emollients
• 2 silicones
• 2 colourants
• 1 conditioning agent
• 1 oil
• 1 fragrance
• 1 declared fragrance
• 1 gum
• 1 film former
• 1 botanical extract

Ingredient list captured 2026-08-27. Formulas change, so check the package in your hand when an ingredient matters to you.