Chemical peels do produce photosensitivity and dermatologists often prescribe a topical steroid and a sunscreen for that. These sunscreens do flare up the acne. Oral Iso ret 20 also causes photosensitivity. At the moment, just avoid topical applications and just use topically adapalene available as Adaferin or Deriva C in the Indian market once daily at night time. The effect of therapy on acne lesion will become visible in 1-3 months. If inflammatory acne lesions are there, then treatment need to be modified. For more enquiries, consult a dermatologist.