Slaykesh formulas are dermatologist tested. This page explains that claim. It is not the About Us story.
The leave-on Scalp Nurture Serum and the rinse-off Hydra Shine Hair Mask are dermatologist tested for scalp and hair use. Serum actives and percentages are printed on the bottle. This is not a named-doctor endorsement and not a medical treatment for hair loss.