Taking collagen supplements may help lighten dark spots on your face. Instead of directly blocking pigment production, the special proteins in collagen appear to boost skin cell growth and repair, which gradually improves your skin's overall appearance.

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Pro

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Evidence from Studies

Supporting (1)

60

Community contributions welcome

60

Effect of Reducing Pigmentation by Collagen Peptide Intake: A Randomized, Double-Blind, Placebo-Controlled Study

Randomized Controlled Trial

Human

2022 Jul

The study confirms that taking collagen peptides orally helps reduce dark spots and pigmentation on the skin, supporting the main idea of the claim, though it does not test exactly how the peptides work inside the body.

Contradicting (0)

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No contradicting evidence found

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Effect of Reducing Pigmentation by Collagen Peptide Intake: A Randomized, Double-Blind, Placebo-Controlled Study

Score: 60

DOI: 10.1007/s13555-022-00748-4

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