Softeners are fats, fat-like and fat-soluble substances that can increase the elasticity of the skin and mucous membranes and protect them from external irritants. Softeners are used as the basis for the preparation of soft dosage forms (see). The most common emollients are petrolatum (see), petroleum jelly (see). glycerin (see), paraffin (see), spermaceti (see), white and yellow wax, vegetable oils: cocoa , linseed, almond, sunflower, etc. Lanolin is also a softening agent; waters with sheep wool. There are anhydrous lanolin and water containing 30% water. Apply as a basis for ointments.
See also Envelopes.