Amaranthus Cruentus Seed Extract: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 23, 2025
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All information on this page is verified using The Personal Care Products Council's (PCPC) INCI database. Our ingredient analyses are based exclusively on PCPC's technical data to ensure accuracy and reliability.

What Is Amaranthus Cruentus Seed Extract?

Amaranthus Cruentus Seed Extract comes from the tiny seeds of Amaranthus cruentus, a flowering plant better known as red amaranth. These seeds are naturally packed with proteins, peptides, unsaturated fatty acids such as linoleic and oleic acid, the lipid squalene, plus vitamins and antioxidant polyphenols. People have eaten amaranth for thousands of years, especially in Central and South America where it was a staple grain for the Aztecs. Interest in its skin loving oils and antioxidants led formulators to explore it for beauty products in the late twentieth century, and its use has been growing ever since.

To produce the extract, cleaned seeds are usually cold pressed or gently solvent extracted to pull out the oil rich fraction. The resulting liquid is filtered, sometimes deodorized, then standardized so every batch offers the same level of key compounds. Because the process is mild it keeps the natural nutrients intact.

You will most often see Amaranthus Cruentus Seed Extract in moisturizers, anti aging serums, nourishing masks, soothing treatments for dry or stressed skin, lip balms and even conditioning hair products where an extra dose of softness is desired.

Amaranthus Cruentus Seed Extract’s Cosmetic Benefits/Uses

In formulas this ingredient serves one main job:

Skin conditioning – The extract coats the skin with lightweight lipids that lock in moisture, smooth rough texture, boost softness and help reinforce the natural barrier. Its natural squalene and fatty acids leave skin feeling velvety, while antioxidants from the seeds can give extra protection against everyday environmental stress.

Who Can Use Amaranthus Cruentus Seed Extract

Thanks to its lightweight mix of fatty acids and natural squalene, Amaranthus Cruentus Seed Extract suits nearly every skin type. Dry or mature skin enjoys the added moisture, normal and combination skin appreciate its non greasy feel and even many sensitive skins tolerate it well because it is free of common irritants. Those with very oily or acne prone skin may want to test a small area first since any lipid rich ingredient can sometimes feel heavy on extremely oily zones.

The extract comes from a plant so it is suitable for both vegans and vegetarians. No animal derived materials are involved in harvesting or processing the seeds.

Current research shows no specific risks for pregnant or breastfeeding women when the extract is used topically. That said this is not medical advice and anyone expecting or nursing should run all skincare choices past a qualified health professional to be safe.

The ingredient is not known to cause photosensitivity, meaning it will not make skin more prone to sunburn. Normal daily sun protection habits are still recommended for overall skin health.

Potential Side Effects/Adverse Reactions

Reactions to topical Amaranthus Cruentus Seed Extract vary from person to person. The effects listed below are only potential issues and are unlikely for most users when products are made and used correctly.

  • Mild redness or stinging in very sensitive skin
  • Allergic contact dermatitis in individuals allergic to amaranth or similar plants
  • Temporary breakouts or clogged pores in those extremely prone to acne
  • Rancid odor or skin irritation if an old or improperly stored product oxidizes

If any unwanted reaction develops stop using the product and consult a healthcare professional if symptoms persist or worsen.

Comedogenic Rating

Rating: 1 / 5 – Amaranthus Cruentus Seed Extract is mostly composed of lightweight unsaturated fatty acids plus a good amount of squalene, both of which tend to sit on skin without forming heavy plugs. Its molecules absorb fairly fast and leave minimal residue, so the likelihood of blocking pores is low. This makes the extract generally acceptable for acne-prone or breakout-prone skin, though individuals who clog very easily may still prefer ultra-light options.

Because the oil fraction is rich in polyunsaturated fats it can oxidize over time, and oxidized oils have a higher chance of irritating or congesting skin. Fresh, well-preserved products lessen that risk.

Summary

Amaranthus Cruentus Seed Extract is used in cosmetics mainly for skin conditioning. Its mix of fatty acids and natural squalene reinforces the barrier, reduces moisture loss, softens rough patches and adds a light protective layer. Antioxidant polyphenols help fend off daily environmental stress, supporting overall skin comfort and resilience.

The ingredient is gaining steady popularity in clean and plant-based formulations, though it is still less common than classics like jojoba or argan oil. As more brands look for sustainable alternatives with a light feel its presence on labels is expected to grow.

Current data shows it is very safe for topical use with a low allergy profile and no known systemic concerns. Still, every skin is unique so it is wise to patch test any new product containing Amaranthus Cruentus Seed Extract before making it part of a regular routine.

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