Today there is a thing called "Glycolic Acid Kopfhaut", which is the core of everything. Our generation should be guided by the "Glycolic Acid Scalp", study it diligently and explore it carefully. The nature of this thing, or it has unique abilities, can be applied between the hair and the skin to achieve wonderful effects. However, if you want to understand it in detail, you must investigate it in detail, from its origin, characteristics, effectiveness and other aspects, and study it carefully. Don't stop at the slightest taste. You must go back to the source and do your best to obtain the true meaning of this thing, and make good use of it to benefit people and achieve a career.