Before investing in the full size product, I decided to try the sample size first. I have natural curly hair, that is more coarse and dry, as I’ve transitioned to my natural gray. So far, I am very pleased with the increased suppleness and conditioning K18 has provided. I have used twice now, and have enough for a third test. Overall, I am pleased with the product, just not sure if it’s worth the price tag for the full size bottle.