I have this product in the bottle with the purple lid (Extra Strength Silicone Serum for dry and damaged hair). I used to use a Salon Professional Serum but was eager to find a cheaper option. I have to say that this product is just as effective as the salon product and a tenth of the price. I use it on wet hair to help with tangles and a tiny bit on dry hair to smooth frizziness and static. It does tend to leave some residue if you use too much or if you have fine hair. I would recommend using a clarifying shampoo once a week in conjunction to this product. If you have long wavy hair which is prone to frizz and tangles then this product is a must hair.