I have used it for about 2 years there are a few different ones I use global kertian smoothing system, they seem to be the best for every client and last 4 to 5 months, I include the shampoo and conditioner in the price, it has the product in it, I would recommend educating clients on what they need to do, at home care, it does take about 2 to 3 hours, shampoo 2 to 4 times clarifying , apply product blow dry in 95℅ flat iron small sections with 4 to 8 passes depending on hair, (also repairs damaged hair) 450 degree flat iron. Is a must have I use the croc, no hair ties or water on hair for 48 hours, I also include first shampoo then add deep conditoner. So u know the results, all products are global ketian, hope this helps
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