Collagen

Best

Humectant

Collagen at a glance

  • Critical component of skin
  • Protein that provides skin structure
  • Loss of collagen leads to multiple signs of aging
  • Functions topically as a humectant

Collagen description

Collagen is a protein that is a critical component of skin’s extracellular matrix, or ECM. It is the most abundant protein in the human body. Collagen provides structure and support for skin’s basic architecture, in addition to defining cell behaviors and tissue function. Collagen depletion – either through the natural process of growing older or repeated environmental assault – is one of the key factors leading to signs of visible aging. When applied directly to skin, collagen’s largest benefit is as a humectant, binding water to help skin retain moisture. It does not, however, build new collagen. Its high molecular weight means it isn’t able to penetrate skin, and beneath the surface is where it would work optimally to restore skin firmness. However, this doesn’t mean you can’t promote collagen! There are other ingredients, among them key targeted peptides, that help to restore collagen within skin, improving the look and feel of firmness.

Collagen references

  • Journal of Public Health in Africa, March 2023, pages 1-6
  • Materials Today Bio, June 2022, ePublication
  • Materials, September 2020, pages 1-15
  • Current Aging Science, July 2019, pages 22–30
  • Gerontology, February 2015, pages 427–434

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings

Best

Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.

Good

Necessary to improve a formula's texture, stability, or penetration.

Average

Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.

Bad

There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.

Worst

May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.

unknown

We couldn't find this in our ingredient dictionary. We log all missing ingredients and make continuous updates.

Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.