The answer to this question depends on your intentions for adding a collagen cream to your skin-care routine.
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The collagen molecules used in skin-care products are too large to effectively penetrate the skin barrier and stimulate collagen synthesis.
Peptides and hydrolyzed collagen join typical chemical sunscreen ingredients to bring additional collagen-boosting benefits to the SPF-infused cream.
Some other helpful ingredients to look for in collagen creams include niacinamide, ceramides, and plant-based retinol alternatives, like bakuchiol.