The American Crew Anti-Hair Loss treatment is the go-to leave-in product for thinning hair. Instantly refreshing the scalp to clear pores and improve scalp condition, a necessary step to optimize the efficacy to combat hair loss and thinning. Keratin Amino acids and vegetable proteins help to strengthen hair, whilst pro-Vitamin B5 provides moisturization - This treatment has those ingredients in abundance. It's a fast-absorbing, leave-in formula that strengthens and reinvigorates hair when massaged into scalp, resulting in significant improvement in hair volume and minimized hair breakage. For best results, use the entire Anti-Hair Loss System, which includes the aftercare shampoo.Benefits:Helps to invigorate the scalp when massaged in.Strengthens hair.Keeps/maintains hair density.Fortifies hair fibers.Revitalizes brittle hair.Hydrates scalp and hair.Improvement in hair/volume/body.Does not weigh the hair down.