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.
Several over-the-counter anti-itch creams that can be applied directly to the skin to help alleviate itching contain natural medications like calamine, suggests the American Pregnancy Association. Other similar natural medications include fragrance-free lotions, oatmeal based creams or bath agents, and aloe vera.