Bakuchiol comes from Psoralea corylifolia (babchi). One 2018 study found 0.5% bakuchiol comparable to 0.5% retinol over 12 weeks for fine lines and pigmentation — without the irritation profile of retinol.
What the evidence actually shows
One main clinical study with 44 participants. Suggests parity with retinol for fine lines and pigmentation, fewer side effects (no scaling, less stinging). Multiple smaller in-vitro studies support the mechanism (activation of similar genes to retinoids).
This isn't enough evidence to call bakuchiol equivalent to retinoids. But for users who can't tolerate retinoids, it's the best alternative currently available without prescription.
When bakuchiol is the right pick
Pregnancy or breastfeeding (retinoids contraindicated). Severe retinoid intolerance (flushing, peeling, eczema flares). Sensitive skin that wants anti-aging benefit without irritation. As a daytime addition (retinoids are night-only for most users).
The Inkey List Bakuchiol Moisturiser is the cheap UK starter. Bybi Bakuchiol Booster is the slightly more concentrated option.
Where retinoid still wins
Severe photoaging, established wrinkles, acne (bakuchiol has no acne evidence), and skin that tolerates retinoid well. The cost-benefit for tolerable users favours retinoid by a wide margin.
Bakuchiol is a useful 'second-best' for the meaningful minority who can't use retinoids. For everyone else, retinoid remains the higher-evidence choice.