it took about a week of use before i noticed a difference. i have very fine, flat, straight hair and regular shampoos and conditioners seemed to always weigh it down, even ones specifically for volume. after about a week of using this product i did notice some more body to my hair. i find that while i am able to comb while wet, i still use a light weight leave-in conditioner. overall i am happy and will purchase again.
*****update**** i am now three-quarters finished with the bottle and i no longer need the additional leave-in spray conditioner. my hair combs easily when wet after the shampoo. my hair feels and looks healthier. i am purchasing another bottle today.