All Natural, Chemical-Free Healing Lotion for Skin Disorders (Including Eczema, Psoriasis, skin rashes and severy dry skin), Allergies & Irritations. Tortuga is a chemical-free therapeutic lotion made from avocado, carrot seed and black cumin oils are emulsified with a 2.6 lipid acid level Shea butter to form a rich hydrating creamy skin conditioner. Tortuga was designed for dry, chapped and rough skin with a high concentration of oils that soften, heal, rejuvenate and restore the skin.