This is the conventional product of Crystallizing Straight. This is only the second agent of the hair straightening agent. 400g Please purchase if you know how to use it. Unopened product. There are no particular problems, but please understand that it is a home-stored item before purchasing. When shipping, I will make a small hole in the edge of the package with a needle to release the air so that it fits in the post. I will seal the hole with tape, but if you prefer to open the cap and release the air rather than making a hole, please contact me immediately after purchase. Please understand the above before purchasing. No smokers, no pets.