Nutrient-Activated No Animal Ingredients No Animal Testing With Aloe Vera, Protein, Vitamins & Mucopolysaccharides The Energy Supplements Ultra Nails Nail Strengthener is a specially designed formula for the nail and cuticle. Each nutrient-rich application strengthens and conditions the nail with Calendula, Lavender, Tea Tree, Cucumber, Aloe Vera, Protein, Vitamins and Mucopolysaccharides. Ultra Nails nutrient-activated Nail Strengthener is a formaldehyde free, non-irritating formula that absorbs quickly, leaving nails stronger, harder and less brittle.