It depends on what you are treating
Pharmacokinetics, biological activities and health benefits of hydroxycinnamic acids and their metabolites
Researchers are responsible for ensuring proper handling, storage, and disposal in accordance with institutional, federal, and international guidelines
Bottom line : If you wanna get serious about retinoids, RP is not your ingredient (retinol or tretinoin is!)
127 Another clinical trial in 50 patients with tinnitus, half of whom also had hearing loss, found treatment with intramuscular injections providing 100 mg vitamin B1, 100 mg vitamin B6, and 1,000 mcg vitamin B12 twice weekly led to tinnitus improvement mainly in those without hearing loss
Synthesized to 99% purity, with every lot supported by an independent Janoshik COA and full batch traceability