Abstract: A new class of anti-spasmodic compounds having three branch chains is provided. These compounds have the general formula: ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are saturated straight chain or branched alkyl groups contained from 1 to 8 carbon atoms, and are separated or linked to one another to form an aliphatic ring system. k is an integer from 0 to 5, and the total number of carbon atoms in R.sub.1 plus R.sub.2 plus R.sub.3 plus k are equal to or less than 12. Furthermore, l is an integer from 1 to 3, m is an integer from 1 to 3, n is an integer from 1 to 3, and X may be nonexistent or may be O, S, NH or CH.sub.2 or salts thereof. However, when X is nonexistent the terminal group in both the m chain and the n chain is a methyl group.

Abstract: New 3-carbamoyl- and 3-thiocarbamoyl-tetrahydro-1,3-thiazine-2-thiones are disclosed as skin treatment compositions based upon physiologically-compatible carriers and a content of these compounds as active substance for increasing the skin protection, in particular against sun radiation and contact with environmental substances of all types. The skin treatment compositions are also suitable for prophylactic control of so-called aging skin. The compositions are applied to the skin one or two times daily for about 3-4 weeks.