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.
4. Lotions. There are many non-prescription lotions that relieve the itch from heat rash. Smooth mentholated or calamine lotion on your skin to cool the irritated areas. Alternatively, gently apply the gel from an aloe vera leaf, a plant well-known for its healing and soothing properties.