Sulfate/ Sulphate free products are the best choice for hair with extensions as sulphates can prematurely break down the glue/ bonds used.
Sulfate/ Sulphate is a detergent that can reduce the quality of your strands when penetrating hair follicles. As a result, hair can become brittle and prone to breakage, reducing overall volume. Going sulfate-free will help maintain healthier hair. Because sulphates are detergents, typically sulphate free shampoos will not produce the same lather a normal shampoo would - this does NOT mean you need more product! The same cleansing power, just less foam.
If you colour your hair then sulfate-free shampoos are a must. Their milder formulas help hair to retain dye for longer, while sulfates are actually one of the key chemicals that cause colour to fade so are best avoided.
Shampoos containing sulfates can strip away your hair’s natural oils, causing strands to curve away from each other which leads to frizziness.
If you are currently experiencing an itchy and inflamed scalp, chances are your skin is sensitive to sulfate, so switch over to a new-gen formula immediately.