ature’s First Aid Skin Care. Soft & silky care for dry, cracked, painful skin conditions. Natural herbal formula. Developed by a pharmacist. Zim’s Crack Creme is the natural, herbal product for dry, cracked skin. This soft and silky cream formula is a daily moisturizer used to soften and soothe dry, cracked, painful skin. Zim’s Crack Creme – The serious skin product for those serious about their skin. Hands; Feet; Elbows; Knees; Cuticles.