Where I used to work we used wellastrate which works wonders but it does take its tole on the condition and the colour. But when you apply the neutraliser you can mix it with a colour touch to refresh faded areas of the hair.
I've also used the nano keratin system it's brill, not as time consuming as chemical straightening and it leaves the hair in better condition.
They do a few different types and we used it on a client who was having problems with breakage, poor elasticity and couldn't really manage at all with the condition being so bad. We used the one for normal hair and my god it was instantly stronger and she had no frizz, both bonuses in her mind. She was on the verge of tears when she arrived and was very happy when she left, and to me a product that does all that is amazing.
And these days with all these home dyes and rubbish hairdressers you can't be too careful about what products you use and tbh with chemical straightening you still end up having to straighten it to make it smoother.
I've also used the nano keratin system it's brill, not as time consuming as chemical straightening and it leaves the hair in better condition.
They do a few different types and we used it on a client who was having problems with breakage, poor elasticity and couldn't really manage at all with the condition being so bad. We used the one for normal hair and my god it was instantly stronger and she had no frizz, both bonuses in her mind. She was on the verge of tears when she arrived and was very happy when she left, and to me a product that does all that is amazing.
And these days with all these home dyes and rubbish hairdressers you can't be too careful about what products you use and tbh with chemical straightening you still end up having to straighten it to make it smoother.