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.
1 Check out these natural bath therapies to soothe sunburn pain and other symptoms. 2  Add one cup of apple cider vinegar to a bath to help balance the pH (acid or alkalinity) of sunburned skin, and promote healing.  Soak in an oatmeal bath. This is especially helpful for itchy sunburned skin.