Aldehyde, Ketone, Carboxylic Acid Aldehyde: Aldehyde is an organic compound which contain formyl group. This functional group, in its structure R-CHO, consist of carboxyl centre bonded to R group and hydrogen.
1 Infections, bites and stings, infestations, chronic diseases, allergic reactions, sun exposure, and dry skin are among the numerous causes of itching.  Anti-itch creams and lotions containing camphor, menthol, phenol, pramoxine (Caladryl, Tronolane), diphenhydramine (Benadryl), or benzocaine can bring relief.
Treatment. 1  Topical antioxidant products may help reduce wrinkles and blemishes and protect against sun damage. 2  Chemical peels, dermabrasion, laser therapy, injectable skin fillers, and botulinum toxin injections can be used alone or in combination, depending on the extent of photodamage and skin wrinkles.