Cetyl Alcohol, Cetearyl Alcohol, Myristyl Alcohol and Behenyl Alcohol are white, waxy solids, not related to ethyl alcohol. Cetyl Alcohol and Stearyl Alcohol are two major components of Cetearyl Alcohol. These ingredients are all fatty alcohols and occur naturally in small quantities in plants and animals. They are commonly used in cosmetics and personal care products, especially in skin lotions and creams.
Dimethicone and Methicone, both silicone based polymers, are also considered halal, and used as antifoaming agents or skin conditioning agents.
Ethyl alcohol or common alcohol, when used in products that are not food, beverages or oral hygiene products, in most countries including the United States, is denatured alcohol. This means that a small amount of denaturant is added to the alcohol to make it taste bad. Alcohol Denat. is the general name used for denatured alcohol. Specific denatured alcohols that are permitted for use in cosmetics and personal care products include Specially Denatured (SD) Alcohol. Alcohol and Alcohol Denat. are used in many products including makeup, lotions, fragrance, shaving products, oral care, skin and hair care products.
Isopropyl Alcohol is widely used in cosmetic and personal care products and can be found in nail, hair and skin care products including aftershave lotions, bath products, eye makeup and cleansing products.
All the above products with names ending in alcohol are not drinkable and orally consumable products. They have no relation to khamr the common intoxicating alcoholic drinks. Hence they are halal for use in skin care products.