Cyclopropylmethylbimatoprost: 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 24, 2025
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All information on this page is verified using publicly available nomenclature standards and reference materials from The Personal Care Products Council (PCPC) and the European Commission's CosIng database. Our analyses are based on technical data from these sources to ensure accuracy and reliability.

What Is Cyclopropylmethylbimatoprost?

Cyclopropylmethylbimatoprost is a lab-created molecule that belongs to the family of prostaglandin analogs. Chemically it carries the long name 5-Heptenamide, N-(cyclopropylmethyl)-7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(1E,3S)-3-hydroxy-5-phenyl-1-penten-1-yl]cyclopentyl]-, (5Z). Scientists first explored this group of compounds for their ability to support hair growth, and a modified version soon caught the eye of cosmetic chemists who saw its potential as a skin-friendly antioxidant.

Production starts in a controlled factory setting where base prostaglandin structures are combined with a cyclopropylmethyl side chain. Careful steps of reaction, purification, then quality checks ensure the final powder is pure and stable before it reaches formulators.

Because cyclopropylmethylbimatoprost helps shield skin from everyday oxidative stress, brands add it to targeted products such as lash and brow serums, eye creams, anti-aging moisturizers, masks and specialty spot treatments.

Cyclopropylmethylbimatoprost’s Cosmetic Benefits/Uses

This ingredient offers one standout benefit that makes it valuable to skin and lash formulas.

As an antioxidant it helps neutralize free radicals formed by pollution, sun exposure and other daily stressors. By reducing this oxidative damage it supports a fresher look, helps maintain skin elasticity and protects the delicate proteins that keep lashes and brows appearing strong.

Who Can Use Cyclopropylmethylbimatoprost

Cyclopropylmethylbimatoprost is generally suitable for most skin types including oily, combination, normal and mature skin. People with very sensitive or reactive skin should approach with a bit more caution because the prostaglandin family can sometimes trigger mild redness or warmth, especially around the eye area.

The ingredient is fully synthetic and contains no animal by-products so it fits vegan and vegetarian lifestyles. Most brands that work with it also avoid animal testing yet shoppers who want confirmation should always check for a cruelty-free certification on the finished product.

Pregnant or breastfeeding women should speak with their health care provider before using any product that contains cyclopropylmethylbimatoprost. This article is not medical advice and medical guidance is the safest route for both parent and baby.

The molecule does not make skin more prone to sunburn so it is not considered photosensitising. Daily sunscreen is still smart but you do not need extra sun precautions because of this ingredient.

Contact lens wearers can use it as well; just make sure the formula is approved for use around the eyes and follow package directions.

Potential Side Effects/Adverse Reactions

Side effects and reactions to topical cyclopropylmethylbimatoprost can vary from person to person. The points below list potential issues and are not the usual outcome. When the ingredient is well formulated most users enjoy the benefits without any problems.

  • Mild redness or stinging around the application site, most common during the first few days of use
  • Itchiness or dryness on the skin or lash line
  • Temporary darkening of the skin where the product is applied, especially on thinner eye lids
  • Unwanted hair growth if the serum drips onto areas not meant for treatment
  • Eye irritation or watery eyes if the product accidentally gets into the eye
  • Rare allergic reaction such as swelling hives or severe redness
  • Very rare iris darkening in people with light-colored eyes when used close to the eye over long periods

If any of these effects occur stop using the product and consult a medical professional for further advice.

Comedogenic Rating

Rating: 0 / 5. Cyclopropylmethylbimatoprost is a lightweight synthetic molecule with no oily or waxy residues so it does not block pores. It stays on the skin surface, does its antioxidant job, then breaks down without forming a film that could trap dead cells or sebum. This makes it a safe pick for people who struggle with blackheads or breakouts. If blemishes appear, they are more likely tied to other ingredients in the formula or to individual skin factors rather than to cyclopropylmethylbimatoprost itself.

Its pore-friendly nature also means formulators can pair it with richer emollients without pushing the overall product into pore-clogging territory, which is helpful in eye creams and lash serums that need a bit of slip.

Summary

Cyclopropylmethylbimatoprost is used for one clear purpose: antioxidant defense. It hunts down free radicals from UV light, pollution and everyday stress so proteins in skin, lashes and brows stay stronger for longer. While not yet a household name, it has gained quiet popularity in niche products like lash serums and high-end eye treatments where protecting delicate areas is key.

In well-made formulas it is considered low risk with most users enjoying smoother, fresher looking skin and fuller looking lashes without trouble. Still, every skin is unique so it is smart to patch test any new product that lists cyclopropylmethylbimatoprost before adding it to your daily routine.

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