Dipeptide-12: 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 27, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Dipeptide-12?

Dipeptide-12 is a lab crafted peptide made from the amino acid lysine, a molecule naturally found in many proteins. Scientists first explored it while looking for gentle skin brighteners that could also soften and smooth the complexion. Using modern peptide synthesis, chemists link two lysine units through controlled reactions, purify the result, then blend it into cosmetic bases. Because it is entirely synthetic, its quality and strength stay consistent from batch to batch.

Brands often add Dipeptide-12 to lightweight serums, targeted dark-spot treatments, brightening creams, eye products, sheet masks and daily moisturizers that aim to even tone and give skin a fresher look.

Dipeptide-12’s Cosmetic Benefits/Uses

In formulas this ingredient serves one main purpose: skin conditioning, meaning it helps skin feel softer, smoother and more hydrated while supporting an even appearance. Regular use can leave the surface looking refined and comforted which is why it appears in products that promise brighter healthier looking skin.

Who Can Use Dipeptide-12

Most skin types including dry, normal, combination and oily usually tolerate Dipeptide-12 because this small lab made peptide is gentle and non occlusive. Those with extremely sensitive or compromised skin should introduce it gradually in case the barrier is easily upset.

Since the molecule is synthesized entirely from basic building blocks without animal input it is considered suitable for vegans and vegetarians.

Current data shows no specific hazard for pregnant or breastfeeding women when Dipeptide-12 is used at cosmetic levels. This is not medical advice and anyone who is expecting or nursing should review the full ingredient list with a doctor before use just to be safe.

Dipeptide-12 does not increase photosensitivity so it will not make skin burn faster in the sun. Regular sunscreen is still recommended for overall protection.

Potential Side Effects/Adverse Reactions

Individual reactions to topical Dipeptide-12 can vary. The effects listed below are only possibilities and are unlikely to occur for most users when the ingredient is formulated and used correctly.

  • Mild stinging or tingling upon application
  • Transient redness particularly on reactive skin
  • Localized dryness if the surrounding formula lacks moisturizing agents
  • Contact dermatitis in rare cases of personal allergy

If you experience any of these effects stop using the product and consult a healthcare professional.

Comedogenic Rating

Rating: 0/5 – Dipeptide-12 is a lightweight water-soluble peptide that does not leave an oily film or clog pores, so it earns the lowest possible score on the comedogenic scale.

This makes it suitable for acne-prone or breakout-prone skin since it will not contribute to blackheads or pimples. Because it is usually paired with fluid or gel textures rather than heavy butters and oils it poses minimal risk of congestion.

No published data suggest that Dipeptide-12 interferes with sebum flow or alters the skin microbiome in a way that could trigger blemishes.

Summary

Dipeptide-12 is a lab designed dipeptide derived from lysine that conditions skin by softening texture supporting hydration and helping promote a more even tone. Its small size lets it absorb easily while its synthetic origin keeps purity and potency consistent.

Although not a household name it is gaining quiet popularity in specialized brightening serums and eye creams where brands want a gentle alternative to stronger actives like hydroquinone or high concentration acids.

Safety studies and real-world use show a low risk of irritation or pore clogging making it broadly safe for most skin types including sensitive and acne prone. As with any new cosmetic ingredient a short patch test is still wise to rule out individual allergies or sensitivities before full-face application.

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