Usually anyone with normal hair can get hair extensions, but the general recommendation is to match the density of your own hair.  They are not recommended to those suffering from active hair loss, because wearing extensions can lead to a false idea of how extensive your hair thinning is and might prevent you taking any action to treat it.
Those who have sparse hair or very thin hair should also avoid hair extensions to not cause any extra damage to the follicles.
If you’ve been affected by wearing hair extensions and are dealing with thinning hair, Nioxin can help. We have a range of targeted hair thinning treatments that stimulate growth, as well as our Nioxin System Kits , designed for different hair needs and levels of thinning, such as natural hair, colored hair or chemically-treated hair. These include a shampoo, a conditioner and leave-in treatment. You can also try our range of supplements for hair growth to ensure your hair and scalp gets all the necessary nutrients.