Ingredient glossary
Thiamidol
INCI: Isobutylamido Thiazolyl Resorcinol
Strong results with strong evidence behind them. This is one genuinely worth having in a formula.
What it does
- brightening
- antioxidant
strong evidenceA twenty four week randomized double blind study showed daily thiamidol-containing serum and care products produced significant MASI reductions and melasma improvement versus vehicle with sustained benefit after treatment.
On a label: usually effective at 0.1-0.3%.
Who it's for, and who should skip it
Tends to suit
- pigmentation
- melasma
- postinflammatory hyperpigmentation
- normal
- combo
- oily
Approach with care
- very sensitive
- compromised barrier
- pregnancy
- Clogs poresLow
- Irritation riskModerate
Pregnancy: Check with your doctor before using during pregnancy or breastfeeding.
Plays well with
- sunscreens
- vitamin c
- niacinamide
This, for every label you own
One ingredient is easy. A full label is where it gets confusing. The Ingredient Decoder reads any product and tells you the honest truth, ingredient by ingredient.
Educational information about a cosmetic ingredient, not medical advice.