1-Methylhydantoin-2-Imide in Skincare

What is 1-Methylhydantoin-2-Imide?

1-Methylhydantoin-2-Imide is a naturally occurring amino acid found in skin cells. As a skin-identical ingredient, the body recognises and accepts it, allowing for better absorption and effectiveness. Known for its skin-brightening, rejuvenating, and renewing properties, it helps promote cell turnover, improve skin texture, and enhance radiance.

Skin benefits of 1-Methylhydantoin-2-Imide

Amino acids like 1-Methylhydantoin-2-Imide play a crucial role in skin hydration, repair, and protection. They help maintain a strong skin barrier, keeping the skin healthy, resilient, and youthful.

This powerful amino acid offers multiple skin-enhancing benefits:

Brightens dull skin 

Helps reduce pigmentation and promote a more even skin tone.

Boosts skin renewal 

Speeds up cell turnover for a fresher, healthier complexion.

Reduces dark spots 

Fades hyperpigmentation and improves skin clarity over time.

Enhances ingredient absorption 

Supports optimal pH levels, allowing other active ingredients to work more effectively.

More effective than Kojic Acid 

Clinically proven to deliver superior brightening results.

Digital image of 1-Methylhydantoin-2-Imide on skin surface

Why We Use 1-Methylhydantoin-2-Imide?

1-Methylhydantoin-2-Imide is a naturally occurring amino acid that plays a vital role in skin hydration, repair, and protection. As a skin-identical ingredient, it strengthens the skin barrier, keeping it healthy, resilient, and youthful.

We use 1-Methylhydantoin-2-Imide for its powerful yet gentle brightening properties. It enhances cell turnover, reduces dark spots, and improves skin clarity, helping to reveal a more even, radiant complexion without irritation.

By supporting skin renewal and boosting hydration, this amino acid ensures a brighter, smoother, and healthier glow. Incorporating science-backed ingredients like this consistently allows your skin to look and feel its best every day.


1-Methylhydantoin-2-Imide Products

  • Image of Glycolic Exfoliating Toner bottle and box on orange background
1 8

Glycolic Acid Exfoliating Toner 100ml

Reduces pores, texture & evens skin tone for smooth, glowing skin

£20.00
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Who 1-Methylhydantoin-2-Imide is Best For? 

Ideal for all skin types, particularly those struggling with dullness, uneven skin tone, or hyperpigmentation. Its gentle yet effective properties make it suitable even for sensitive skin.


Things to Consider Before Using A1-Methylhydantoin-2-Imide

Sun Protection 

Since this ingredient accelerates skin renewal, daily SPF is essential to protect the skin from UV damage and maintain results.

Combination with Actives 

Works well with hydrating ingredients like hyaluronic acid and ceramides, as included in the Glycolic Exfoliating Toner, to support skin barrier function.

Layering with Other Actives 

Can be combined with antioxidants like Vitamin C and niacinamide but should be introduced gradually to avoid potential irritation.


1-Methylhydantoin-2-Imide FAQs

Can 1-Methylhydantoin-2-Imide be used daily?

Yes, but if you have sensitive skin, start with a few times per week and increase usage as tolerated.

Does 1-Methylhydantoin-2-Imide work well with Vitamin C?

Yes, it complements Vitamin C for enhanced brightening effects, but it’s best to introduce them separately to assess skin tolerance.

Is it safe for sensitive skin?

It is a skin-identical amino acid, meaning the body recognises and accepts it, making it a well-tolerated option even for those with delicate skin.


Before and after using 1-Methylhydantoin-2-Imide