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Topical serums moisturize and protect the outer layers of your skin, but struggle to reach the deeper dermis where collagen production and cell regeneration happen
The reduced precursors NRH and NMNH show promise in overcoming this, although preclinical evidence for health benefits is still limited, and whether their efficacy on functional readouts would be superior to the classic counterparts NR and NMN is also unclear
doi:10.1016/j.cmet.2015.05.023 Johnson S, Imai SI
It has low global rates of resistance [12] and is effective orally in rosacea
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