Soothing / Sensitive

Willow Bark Extract

INCI: Salix Alba Bark Extract · CAS 84082-82-6

Willow bark extract (Salix alba) is a botanical containing salicin (a natural precursor to salicylic acid), used in skincare as a gentle, plant-based option for smoother, clearer-looking skin.

INCISalix Alba Bark Extract
CAS84082-82-6
Also known assalix, natural salicin
Use levelextract typically 0.5–5%
Solubilitygrade-dependent (water/glycol common)
pH / stabilitybroad
RegulatoryListed in EU CosIng

What it does

  • Supports smoother, clearer-looking, blemish-prone skin.
  • Soothing and antioxidant character from its polyphenols.
  • A gentle, natural-positioning alternative for acid-sensitive users.

How it works

Willow bark contains salicin and polyphenols widely documented for soothing and mild exfoliating/conditioning benefits. Salicin is a precursor to salicylic acid, but the extract is much milder and should not be presented as equivalent in strength to salicylic acid.

Use level

Typical use level
extract typically 0.5–5%

Whole extracts are commonly used at 0.5–5% depending on grade; standardised salicin content varies.

Formulation considerations

  • Choose a grade matched to your phase; check standardised salicin content.
  • Gentle; not a strong-BHA substitute.
  • Generally robust and broadly compatible.

What it pairs with & what to avoid

Pairs well with

  • Niacinamide (blemish-care)
  • Soothing actives

Use with care / avoid

  • Presenting it as equivalent in strength to salicylic acid

Regulatory status

Willow bark extract is listed in the EU CosIng database and is a well-established botanical ingredient.

Common questions

Is willow bark the same as salicylic acid?

No; it contains salicin, a natural precursor, but is much milder and should not be presented as equivalent to salicylic acid.

What is willow bark good for?

Gentle support for smoother, clearer-looking skin, with soothing and antioxidant benefits.

What percentage of willow bark extract is used?

Whole extracts are typically 0.5–5%.

Related monographs

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