l arginine or l carnitine Acetyl Arginate L-Arginine: A Science-Based Powerhouse for
Description
Amino Acids 40(4):10531063, doi:10.1007/s00726-010-0715-z Wu G, Wu Z, Dai Z, Yang Y, Wang W, Liu C, Wang B, Wang J, Yin Y (2013) Dietary requirements of nutritionally non-essential amino acids by animals and humans

"I had persistent melasma for 6 years and had tried everything hydroquinone, retinoids, facials and three different clinics

- Stimulates collagen production for firmer, smoother skin

doi: 10.1016/S1473-3099(03)00806-5

Our experience and user reports indicate it usually peaks within 5-10 minutes and completely subsides within 20-30 minutes post-administration
