Unlike ingredients that work only on the skins surface, it gets to work deep within, repairing, protecting, and rejuvenating skin at the cellular level
In a pilot study in Thailand, Sangsuwan and Asawanonda tested the influence of daily intake of oral collagen (5 g) for 4 weeks on skin elasticity, especially in sun-exposed areas, in a randomized, double-blind, placebo-controlled trial (in a total of 36 women, aged 4060 years, where one-half of the participants were in the treatment group [ n = 18] or the placebo group [ n = 18]) [39]
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Skin flushing
That said, most people start to notice results soon after beginning the dosing cycle, which is typically prescribed for between six to 12 weeks