Sally Hansen nail growth miracle grow 30% longer in just 5 days. Exclusive protein complex supports and protects nails so they can grow longer and stronger. Soy Protein (binds moisture to nails), helping to strengthen and promote growth without brittleness. Keratin helps protect nails against splitting, cracking and tearing. Collagen and multi-vitamins help stimulate healthy nail growth. For greater results, use with Nailgrowth Miracle Serum. No DBP, toluene or free formaldehyde.