You can maintain skin health while benefiting from the combination therapies by balancing the use of acids and retinoids, keeping skin moisture, utilising preventive measures, and monitoring your skin's response
Oral NAD supplements range widely in price but are usually moderate, perhaps $1-3 per day for a quality NR/NMN product
When converted to hydroxyl, hydrogen peroxide is able to cross membranes, and ozone is a powerful oxidant of lipid chains, as well as it is able to interact with different organic and inorganic substances, in addition to generating other free radicals (Bensakhria 2018)
J Transl Med 17:55 Tsai SY, Lin CL, Shih SC, Hsu CW, Leong KH, Kuo CF, Lio CF, Chen YT, Hung YJ, Shi L (2018) Increased risk of chronic fatigue syndrome following burn injuries