The OGX Pro growth Shampoo for Thin Hair is specially formulated to promote volume and growth, with key active ingredient Biotin. This sulfate-free shampoo is designed for unisex use and comes in a 385ml size, making it a convenient and effective option for everyday hair care. The volumising effect helps to enhance the appearance of thin hair, leaving it looking fuller and healthier. This product is ideal for those looking to improve the overall look and feel of their hair through a nourishing and revitalizing shampoo. Over 3/4 full, I think I used it two/ three times and did not suit my hair type.