But, you should not be using shampoos that can harm your hair and even some of the best shampoos that claim they are specifically for thinning hair, contain harmful ingredients. That's insane.
The main culprit? Sodium lauryl sulfate . Sulfates in general are bad because they are harsh solvent cleaners. They are used in shampoos to create lather. In the amounts used in Shampoos they are not lethal or dangerous but there is no good reason anyone concerned about hair loss should ever use Sodium Lauryl Sulfate on their head.
Now most hair loss shampoos contain the sulfates and I stay away from them. Nioxin is a popular brand which makes several products to help you with your hair loss problem. The Nioxin Shampoos all contain Sodium Lauryl Sulfate or some variation of it.
All the Nioxin hair loss products do have one thing in common. It is not that they work either. It is that they are all expensive. In fact most shampoo that is concert good is very expensive and it shouldn't be. A bottle of my preferred Shampoo is on $2.90 and I'm known to not consider cost as a factor in the products I use.
If it works, I will pay for it. If there was a shampoo for hair loss that REALLY worked and it was $1000 a bottle, then I would by it. So what I'm saying to you is that there is not one.
Now there are several Shampoos designed to help put your scalp in the best position possible to avoid hair loss if at all possible. And just because something says "For Hair Loss" or "For Thinning Hair" does not mean anything other than it is expensive.
The answer is to find a completely natural shampoo containing no sulfates. The one I use is called Trader Joe's Nourish Spa and is under $3 for 16.9 oz.
If you don't have a Trader Joe's Nearby do not panic. There is another shampoo I like and is available at health food stores and online. It's cheaper online because you don't pay sales tax or the overheads associated with retail stores.
The other shampoo is called Aubrey Organics, Men's Stock, Ginseng Biotin Shampoo, 8 fl oz (237 ml)
It's only $8.46 a bottle at my supplier and there is no reason to every use anything else.
If you want to try Aubrey Organics, Men's Stock, Ginseng Biotin Shampoo and receive $5 off the price visit http://www.iherb.com/Aubrey-Organics-Men-s-Stock-Ginseng-Biotin-Shampoo-8-fl-oz-237-ml/10462 then enter Coupon Code LAT159 at checkout to get $5 off
Once you become a customer of iHerb, they will usually email you a coupon for $5 or $10 any order every 3 months or so. iHerb is a terrific value and you can find anything you can find in a Vitamin or Health Store usually at around 30% off of retail and not sales tax. The saving are significant.
The only other Shampoo that you may need is Nizoral 2% which is a prescription strength dandruff shampoo. Even if you do not have dandruff, studies show Nizoral 2% has a positive effect on hair loss. It is pretty common knowledge among physicians. If you can find some, I would use it twice a week only.
Good Luck and stop spending money on fancy hair loss shampoos you don't need.