Ask for the chromatogram, not just the reported number
J.ColemanT.WatsonA.NaidooN.et al (2012)
On the injectable side: using plain sterile water instead of bacteriostatic water (your vial will grow bacteria within days), shaking the vial during reconstitution, injecting into the same spot every time, and going intramuscular when subcutaneous is the correct depth
Shy of that, you at least would want to make sure that theyve done some work ahead of time, sending a few of their samples to a lab to make sure what theyre concentrating is at that proper efficacy
Key exfoliating ingredients to look for are lactic acid , and/or urea, glycolic acid, salicylic acid
Early changes in skin quality or inflammation may be noticeable within a few weeks, while more visible improvements in texture, firmness, or hair typically emerge over 8 to 12 weeks