Which ingredients can make my skin more sensitive to the sun?

A few ingredients are best paired with diligent daytime sun protection. Retinoids such as retinaldehyde can increase sun sensitivity, so using a broad-spectrum sunscreen by day is important. Salicylic acid, like any exfoliant, also pairs best with daily sunscreen. And with bakuchiol it is wise to avoid raw babchi (bakuchi) seed oil and unpurified extracts, which can contain psoralens (natural photosensitizers), and to choose purified bakuchiol instead. This is cosmetic reference for appearance and formulation, not medical advice.