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Eucerin
[Eucerin] Even Radiance Brightening Booster Serum 30ml
about $67.00
Isobutylamido Thiazolyl Resorcinol
In cosmetic formulas, Isobutylamido Thiazolyl Resorcinol lightens skin, hair, or nails.
What does Isobutylamido Thiazolyl Resorcinol do in a formula?
Isobutylamido Thiazolyl Resorcinol lightens skin, hair, or nails.
The listed functions explain its role in a formula. They do not establish whether a finished product will suit your skin.
No reviewed benefit claim is available here yet. Compare the complete formula, its directions, and your own skin preferences.
What a CosIng listing meansCurrently found on
In the Journal
- What Is Thiamidol, and Does It Fade Dark Spots?
Thiamidol is a lab-discovered tyrosinase inhibitor with a real 2026 trial behind its appearance-of-dark-spots claim - but almost every study on it, including the foundational mechanism papers, comes from Beiersdorf, the company that patented and sells it exclusively through Eucerin.
Beauty reading & sources
Research papers (5)
Related papers naming this ingredient in their title or in a beauty-relevant abstract passage. Laboratory, clinical and exposure studies have different scopes; these links are not reviewed benefit claims.
- Efficacy and safety of 0.15% isobutylamido thiazolyl resorcinol combined with hyaluronic acid vs 0.15% isobutylamido thiazolyl resorcinol or hyaluronic acid alone in melasma treatment: A randomized evaluator-blind trial.
Journal of cosmetic dermatology · 2021
- Efficacy and safety of topical isobutylamido thiazolyl resorcinol (Thiamidol) vs. 4% hydroquinone cream for facial melasma: an evaluator-blinded, randomized controlled trial.
Journal of the European Academy of Dermatology and Venereology : JEADV · 2021
- PINGing Sunshine: A Review of the Evidence for Adding Non-Filtering Photoprotective Ingredients to Sunscreens.
Photodermatology, photoimmunology & photomedicine · 2025
See 2 more research papers
- Visible light induces skin darkening in vivo: comparative pilot studies reveal enhanced susceptibility in melasma and its mitigation by a human tyrosinase inhibitor.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2026
- First Two Cases of Allergic Contact Dermatitis From Isobutylamido Thiazolyl Resorcinol ('Thiamidol') in Depigmenting Skin Care Routine.
Contact dermatitis · 2025
PubMed is hosted by the U.S. National Library of Medicine. Listing there does not mean NIH authored or endorses a paper.
Cosmetic ingredient references
- Isobutylamido Thiazolyl Resorcinol in COSMILE Europe
Industry ingredient directory · matched to the publisher’s ingredient index.
- European Commission CosIng database
Catalog reference 92024. Database inclusion is not approval or proof of safety or effectiveness.
Which papers mention Isobutylamido Thiazolyl Resorcinol?
The research feed contains 1 linked papers (2025).
Highlights below name the ingredient or a recorded alias in their titles. A mention does not establish a skincare benefit: a paper may study oral use, a combination formula, or a different population. Reviewed ingredient claims, when available, are assessed separately for their stated scope.
No title-matched highlights are available here. Browse the full linked feed for additional papers.
Where it fits in real formulas
Related ingredients, common formula neighbors, naming, and catalog context. This stays separate from evidence and personal-fit guidance.
Similar ingredients
related by documented function or concern
Which products contain Isobutylamido Thiazolyl Resorcinol?
All 2 →2 public products list this ingredient.
Catalog preview
A compact look at the first products in this result set
1–1 / 2
About the sources
Ingredient lists show presence and order, not concentration, pH, ingredient grade, delivery system, or finished-formula performance.
Sources & methodologyCompiled from the EU CosIng database (ref 92024) · snapshot 16 June 2026. CosIng is an informational, non-legally-binding reference. Inclusion does not mean an ingredient is approved, safe, authorized for cosmetic use, or clinically effective. An INCI list does not reveal concentration, pH, ingredient grade, delivery system, or finished-formula performance.