Ingredient glossary

Sodium Lauryl Sulfate

INCI: Sodium Lauryl Sulfate · Also: SLS

Worth paying for

Strong results with strong evidence behind them. This is one genuinely worth having in a formula.

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What it does

  • cleansing
  • oil removal

strong evidenceHuman and animal studies show sodium lauryl sulfate causes dose related increases in transepidermal water loss erythema and proliferative responses and is widely used as a model irritant in dermatology.

Who it's for, and who should skip it

Tends to suit

  • oily
  • acne prone

Approach with care

  • inflamed
  • very sensitive
  • compromised barrier
  • rosacea
  • eczema
  • Clogs poresModerate
  • Irritation riskHigh

Pregnancy: Not for use during pregnancy or breastfeeding.

Plays well with

  • amphoteric surfactants
  • nonionic surfactants

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Educational information about a cosmetic ingredient, not medical advice.