Isobutylamido Thiazolyl Resorcinol
Isobutylamido Thiazolyl Resorcinol is a high-performance skin-brightening active known for its selective tyrosinase inhibition, helping to visibly reduce post-inflammatory hyperpigmentation such as acne marks, dark spots, melasma, and sun-induced discoloration.
Clinical studies show visible improvement within weeks, with optimal results seen after 12 weeks of consistent use. It delivers effective brightening comparable to hydroquinone, with excellent skin tolerance, including on darker skin tones (Fitzpatrick V–VI).
Key Benefits
Targets post-inflammatory pigmentation
Helps fade acne marks and dark spots
Supports a more even skin tone
Helps prevent UV-induced darkening
Suitable for a wide range of skin tones
Well tolerated at recommended use levels
Recommended Use
Use day and night; may be applied up to 3 times daily
Best results when combined with other brightening actives
Ideal for spot treatments and overall tone correction
INCI: Isobutylamido Thiazolyl Resorcinol
Use Level: 0.1–0.5%
0.2–0.5% for general brightening
0.5% for targeted spot treatments
Solubility: Glycols
pH Stability: 4.0–5.5
Heat Sensitivity: Avoid prolonged heating above 80°C
Appearance: Light-colored powder
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Applications
Serums, creams, lotions, masks, peels, and post-procedure treatments.
