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It also helps increase the levels of pheomelanin, which in turn brightens the skin

Alternating Schedule: For those with skin sensitivity, applying tretinoin nightly can be too much, so starting 2-3 times a week could help your skin adjust

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Protein Regulation : Through thiol-disulfide exchange reactions, reduced glutathione modulates protein structure and function by reducing oxidized cysteine residues, maintaining proper protein folding and enzymatic activity

Tretinoin is prescription-only in the US, UK, Canada, and most markets

Inflammation is known to cause an increase in oxidative processes and some autoimmune diseases have been associated with an increase in oxidative stress and a decrease in glutathione levels