Yes, studies have demonstrated that collagen supplementation can be effective in improving skin appearance and health, while a lack of collagen has been shown to contribute to dryness and wrinkles (1)(2). Collagen is especially useful in the prevention of dry skin by improving the moisture barrier. One clinical study (3) showed that collagen was effective in boosting the hydration, density, elasticity and structure of the skin.
Research shows that hydrolyzed collagen supplementation is also effective in reducing wrinkles by helping the body to produce its own collagen (2). In one study (4), 69 women aged 35-55 years experienced a significant reduction in eye wrinkles after consuming hydrolyzed collagen for 8 weeks.
Regular ingestion of collagen can also improve the appearance of cellulite. In a 6-month study (5), 105 women ages 24-50 years old saw a significant decrease in cellulite after ingesting collagen daily.
Check out this blog post to learn more about marine collagen's effect on skin health.
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References:
Proksch, E, et al. (2013) Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study.
Ganceviciene, R, et al. (2012) Skin anti-aging strategies.
Asserin, J. (2015). The effect of oral collagen peptide supplementation on skin moisture and the dermal collagen network: evidence from an ex vivo model and randomized, placebo-controlled clinical trials.
Proksch, E, et al. (2013) Oral Intake of Specific Bioactive Collagen Peptides Reduces Skin Wrinkles and Increases Dermal Matrix Synthesis.
Schunck, et al. (2015) Dietary Supplementation with Specific Collagen Peptides Has a Body Mass Index-Dependent Beneficial Effect on Cellulite Morphology, Journal of Medicinal Food.