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.
Aloe Vera is one that the site recommends to use as a topical lotion in order to stop itching from hives. It has been known to stop itching hives immediately and heal the skin. Calamine lotion can also help. Some astringents such as witch hazel and zinc oxide have also been known to stop itching hives.