I'm an esthetician & deal w/ everyone's skin all day but still had old acne marks myself, i had read a lot in new esthetics mags about l-lysine (my spots are hormonal & i recommend women w/ what they think 2 be hormonal acne get a hormone panel done, it may be jprmonal but it may be something else & there are multiple hormones that can cause acne in women, but u hear only about androgens (testosterone) causing it) anyway i was skeptical about this since so many things that don't work pop up in beauty all the time, topical & internal, Im am glad 2 eat those thoughts. Been using in since June 4th & I already had reduced PIH & my melasma has faded (kids! Lol) If u have active breakouts, post breakout marking & scars or other skin issues u need to give this a try. Since it is an amino acid (protien building block) it jelps form collagen & elastin, this benefits our skin, even aging, we lose the ability to form those 2 things quickly & as well over time so we get wrinkles & lines & sagging. I can't wait 2 see the next few weeks! I would love 2 recommend this 2 my clients but I'm not a dr or dietician, so i can just give them my story & say "ask a Dr" which everyone should do before jumping into supplements. L-lysine also helps the absorption of calcium & iron, provides support for our immune system & tests have seen benefits to hormonal regulation, this could be another great benefit to hormonal acne. I will update if i breakout terribly, it stops working, or I have other side effects (i also use Vitex for progesterone regulation, & spearmint capsules to help eliminate free testosterone that can cause the acne by stimulating oil gland to produce more, it clogs pores & gives p. Acnes the anaerobic environ. it loves to feed& thrive, stop the oil production & acne stops too (hence y acutane is successful) ok, these are my thoughts & experience & hope it helps someone else out there. Acne can be stressful, cause anxiety, depression & loss of self-esteem...however, acne or none...u r beautiful!