Rene Furterer's Tonucia Concentrated Youth Serum is specifically developed for those experiencing thin, weakened hair caused by internal (biological clock) and external (stress, environmental) factors. The innovative formula in this serum is infused with lemon balm, a powerful antioxidant and collagen booster and tamarind seed extract, a plant-based hyaluronic acid that densifies hair fibers and provides optimal hydration. The scalp's youth is preserved while thin, rough, dry and brittle hair is restored. Key Ingredients:Lemon Balm Extract: a powerful antioxidant, slows down collagen degradation in the scalpTamarind Seed Extract (Plant-Based Hyaluronic Acid): helps to re-plump and densify the hair fiberOrange Essential Oil and Vitamins B3, B5, B6, B8 & B7: help energize the scalpWheat Microproteins: visibly plump each strand and fill gaps within the hairs’ cuticlesKey Benefits:Developed for those experiencing thin, weakened hair caused by internal (biological clock) and external (stress, environmental) factorsHelps to replump and redensify the hair fiberColor-safe and free from silicones, sulfates and parabensVegan, biodegradable formula | René Furterer Tonucia Concentrated Youth Serum, 2. 5 fl. oz | Dermstore