This has been my Go-To shampoo for the past 2 years. One bottle lasts almost a year. I have a sensitive scalp, but I also have very oily fine hair, and Seborrheic Dermatitis. I've tried other shampoos like head and shoulders, but they're too harsh, causing me to break out. I don't have that reaction with this Shampoo. I use it a few times a week and it works wonders. I also think it helps prevent hair loss, and regrow some hair you've lost as well. If you use this shampoo l, plus minoxidil, you'll start to notice thicker healthier hair in about 3 months. I cant really describe the smell, but the ingrediants are worth it. It's Worth every penny.I bought this when i started noticing hair fall. Based on the reviews I started using this. Initially I was worried to use new product and test it on my hair as i was already losing lots of hair. SO i started with an 8oz bottle. After using i could see the differences. Even if i forget to use conditioner the hair retained its natural oil. And the hair fall is also reduced.This shampoo gets my hair really clean. I have very thin hair and this helps clean my hair to give it volume. I tried it about a year ago and have reordered it every time my bottle is empty. A little goes a long way with the shampoo!This shampoo leaves your hair full volume and ready to go! It’s like it brings your flat hair back to life. I just wished it had a more pleasing scent. It’s not awful, but it has a “medicine” type smell to it, if that makes sense. I use this shampoo about once a week.I researched the shampoo that was less chemicals and had biotin in it which helps with people who have thin hair their whole lives, I've even asked my doctor if they thought it was okay to have biotin absorbed through the scalp for myself.. it's okAsk your own doctors if you have any questions, but it suds is nice the only change since after covid is the container is flimsy and leaks at the cap...so I don't turn it upside down ..Instead I have the one I bought that has a thicker plastic and heavier cap and never leaks.So I know feel that smaller one turn it upside down with no problem and I keep this one I just bought in cabinet, and that's the way I get around it because I do like products.Note to manufacture, whomever you're using as your supplier for the bottles , know I can tell difference is inferior to past bottles... it is thinner plastic, and the cap is not tight, and leaks...to outside, sticky to touch...The product five stars and I've used it for 5 years and my hair stays robust and as a senior, I appreciate low chemicals in product.This is an excellent product. Has very little scent to it and my hair started thinning in my late 50s and I started using it and my hair is almost back to where it was before. I also use their conditioner which is also an excellent productI used this shampoo myself. Initially, I had doubt that something like this would help my hair growing. To my surprise, it does. I could see less spots on my head. I do recommend it...I have purchased this product twice. I really the light smell and the moisture. My hair is less oily and dry after using it for a month. And I could feel my hair has become healthier and stronger. I will purchase it again.I used this product for 6 months and loved it. I would of bought a subscription had the price not gone up almost 200%!!!! I used to buy a 1litre bottle for £19.99 and now a 473ml is £39.99!? The seller has a lost me as a customer because of this. There are plenty of shampoos on the market that do the same and are at a much more reasonable price like this one use to beI liked the product, loved it in fact but I am disappointed in the seller. I bought a 16oz bottle for £19.00. When I wanted to buy more it had gone up in price to £49.73 a 163% price increase. I know people have hiked prices but that is far too much. I messaged the seller too but had no response. There are other shampoos that do the same job at a quarter of the price.Massive markup now, I would have bought again but now a rip-offI have no doubt about the benefits of this shampoo on my scalp, which seems to leave my scalp fresh straight after use. However, unlike my regular caffeine shampoo, the next day my hair seems oily and dull.So I now combine two minutes of this shampoo to clean my scalp followed by my regular caffeine shampoo which is better suited to keeping my hair oil-free and tonic.After reading so many positive reviews about this shampoo I thought I'd give it a go. After the first week of using the product my hair loss had a major increase and now my scalp is damaged and dry. I do not recommend this shampoo at all!