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. Baking Soda. Baking soda is an effective treatment for blackheads as well as acne. It helps clear the skin of impurities such as debris and dirt. 1  Mix two teaspoons of baking soda with mineral water to make a paste. 2  Apply the paste generously on the affected skin area and massage gently. Spread it on your face, leave it on for 10 to 15 minutes and then rinse it off. 2  Alternatively, mix one teaspoon of cinnamon powder and honey to form a thick paste. 3  Apply it on the affected area before bed and leave it on overnight. 4  In the morning, wash your face well with normal water.