Bakuchiol

Bakuchiol is a retinol-like active typically used around ~0.5–1% for anti-aging and acne support; it is generally better tolerated than retinoids but is still an active that can trigger stinging, redness, or dryness in reactive or barrier-impaired skin. Clinical comparisons often show fewer irritation events than retinol, yet case reports and real-world use in multi-active routines (acids, benzoyl peroxide, tretinoin) increase cumulative irritation risk. Given sensitive-skin populations and the need to avoid underestimating reactions, it fits a mild irritancy profile rather than “gentle.” Safety Notes: In commercial leave-on skincare, bakuchiol is often included at very low “supporting” levels (~0.05–0.1%) in multi-ingredient serums and moisturizers where it is not the primary active. Most efficacy-linked products cluster around ~0.5–1.0% based on published studies and common industry positioning, while the highest consumer-available OTC formulations (typically anhydrous oils/serums) are marketed at about 1.5–2.0%; concentrations above ~2% are uncommon due to diminishing practicality (sensory, cost, and stability/solubility considerations). Rinse-off products exist but generally use similar or lower levels than leave-on, as bakuchiol is primarily positioned for leave-on anti-aging use.