The Science of Chlorella Vulgaris Extract in Skincare

Chlorella vulgaris is a nutrient-rich microalgae with strong antioxidant, anti-aging, and skin-rejuvenating properties. This single-celled green algae is rich in peptides, amino acids, antioxidants, and vitamins, and can help to boost collagen production, fight free radical damage, and strengthen the skin barrier. In this guide, we’ll break down the science behind why chlorella vulgaris is able to provide so many amazing skin benefits, as well as how to tell if it could be right for your skin type and specific needs.

Chlorella vulgaris is a freshwater green microalgae known for its high protein content and dense nutritional profile. In skincare, its extract is derived through a process that isolates its bioactive compounds, making them more bioavailable and effective when applied topically.

Due to its ability to thrive in harsh aquatic environments, chlorella vulgaris has evolved to produce protective compounds that shield it from oxidative stress, UV damage, and environmental toxins (3). These same properties make it a powerful skincare ingredient for defending against aging, pollution, and moisture loss.

Chlorella vulgaris extract is rich in biologically active compounds that contribute to its effectiveness in skincare. Some of its key compounds include:

• Chlorophyll. This green pigment, which gives chlorella its color, has detoxifying and anti-inflammatory properties that help to soothe irritation, reduce redness, and support wound healing (4).

• Amino acids and peptides. Chlorella is packed with essential amino acids, including proline, glycine, and lysine, which are crucial for collagen synthesis and skin repair.

• Carotenoids (lutein and beta-carotene). These powerful antioxidants protect against UV damage and oxidative stress, helping to prevent premature aging and hyperpigmentation.

• Polysaccharides. These sugar-based molecules help to retain moisture, strengthen the skin barrier, and improve hydration (5).

• Vitamin B complex (B1, B2, B3, B6, and B12). These vitamins support cell metabolism, promote skin regeneration, and improve overall skin tone and texture.

• Omega-3 fatty acids. Essential fatty acids like alpha-linolenic acid (ALA) help to maintain the skin's lipid barrier, reducing dryness and sensitivity.

• Minerals (magnesium, zinc, and iron). These minerals support skin healing, reduce inflammation, and contribute to an overall healthy-looking complexion.

Because of its rich nutrient profile, chlorella vulgaris extract can provide a number of key benefits to the skin:

• Anti-aging. Chlorella-derived peptides have been shown to increase collagen synthesis, improving skin elasticity and reducing the appearance of fine lines and wrinkles (5).

• Free radical protection. With its high antioxidant content, chlorella vulgaris helps to neutralize oxidative stress, preventing premature aging caused by exposure to UV light and pollution.

• Brightens skin tone. Carotenoids and vitamin B complex work together to improve skin brightness and reduce dark spots.

• Hydrating and moisturizing . Polysaccharides and essential fatty acids enhance moisture retention and help to strengthen the skin’s protective barrier.

• Supports wound healing and soothes inflammation. Chlorella’s chlorophyll and amino acids accelerate skin repair and reduce inflammation (4).

Chlorella vulgaris extract is generally considered safe for topical use and does not commonly cause irritation or other side effects. According to the Environmental Working Group (EWG) ,chlorella vulgaris extract has a strong safety profile, with a hazard rating of 1 out of 10, indicating a minimal risk for toxicity, allergies, or skin irritation.

The Cosmetic Ingredient Review Board (CIR) does not currently have a report on this ingredient.

Because of its many skin-rejuvenating and protective properties, chlorella vulgaris extract is often included in anti-aging serums, hydrating creams, and barrier repair moisturizers. You might see it listed on product labels as Chlorella Vulgaris Extract or Chlorella Vulgaris/Lupinus Albus Protein Ferment on ingredient lists.

Some of the best skincare products that incorporate chlorella vulgaris include:

Chlorella vulgaris extract is known for its strong antioxidant and skin-repairing qualities, making it a great addition to a variety of specific skincare routines. In particular, this ingredient can be excellent for anti-aging purposes, thanks to its rich antioxidant profile.

If you're considering adding chlorella vulgaris to your routine, it is important to choose products based on your specific skin type and needs. Not all formulations will work the same for every skin type. Take the Baumann Skin Type Quiz to find out if chlorella vulgaris extract is right for you!

1. Baumann L. Antiaging Ingredients in Ch. 37 of Baumann's Cosmetic Dermatology Ed 3. (McGraw Hill 2022)
2. Baumann, L. Ch. Cosmeceuticals and cosmetic Ingredients (McGraw Hill 2015)
3. Bertoloni dos Santos, B., Morocho-Jácome, A. L., Prieto, Z. A., Morowvat, M. H., Lima, F. V., Velasco, M. V. R., de Carvalho, J. C. M., & Baby, A. R. (2023). Algae materials for cosmetics and cosmeceuticals. In K. Arunkumar, A. Arun, R. Raja, & R. Palaniappan (Eds.), Developments in applied microbiology and biotechnology: Algae materials (pp. 285-312). Academic Press.
4. de Melo, R.G., de Andrade, A.F., Bezerra, R.P. et al. Hydrogel-based Chlorella vulgaris extracts: a new topical formulation for wound healing treatment. J Appl Phycol 31, 3653–3663 (2019).
5. Lu, B., Hu, H., Yang, G., Pan, M., Wang, Y., Zhang, J., Zhang, J., & Zhang, J. (2024). Ultrasound-assisted green and efficient extraction of polysaccharides from Chlorella vulgaris using deep eutectic solvents and improving their performance. New Journal of Chemistry, 48(10).