What Are Diamond Peptides? The Science Behind This New Anti-Aging Ingredient

February 18, 2026

By: Lauren Sindel

Discover the benefits of diamond peptides in Truly's Diamond Baby Treatment Body Serum, out now!

A breakthrough anti-aging ingredient found in our new clinically proven serum, diamond peptides penetrate deep to visibly firm crepey skin, smooth wrinkles, and improve skin tone.  

Skin is visibly brighter, tighter, and more luminous for 100% of users.*

Diamond Baby Treatment Body Serum

Firm & Brighten With Diamond Peptides

Añadir a la bolsa $44

Buy at Sephora Buy at Boots

What are Diamond Peptides?

Diamond peptides are real diamonds that envelop a powerful wrinkle-fighting and firming peptide within a unique delivery system, enhancing absorption into the skin to help reveal smoother, firmer, more youthful-looking skin.

The diamond acts as a carrier, allowing the peptides to reach deeper layers of the skin where they stimulate collagen and elastin production. This helps reduce wrinkles, firm loose skin, and even skin tone. 

For over a decade, Truly has sourced powerful ingredients from around the world to create one-of-a-kind blends that deliver our signature luxury experience with REAL, VISIBLE results. Diamond peptides are our newest discovery for youthful, radiant skin. And you deserve diamonds, beautiful! 

Benefits of Diamond Peptides

Diamond peptides act as powerful signaling molecules that stimulate the production of collagen and elastin — the proteins that keep skin smooth, firm, and taut. By activating fibroblasts, they increase collagen synthesis, helping to visibly improve firmness and elasticity.

Alongside this, diamond peptides help protect against UV radiation and stress-related collagen degradation, preserving the skin’s structural integrity.

As a result, diamond peptides are highly effective at reducing the depth of wrinkles and firming crepey skin. Here are the diamond peptide benefits in a nutshell:

• Firms loose, crepey skin
• Smooths wrinkles
• Evens skin tone
• Brightens dullness
• Increases elasticity 
• Protects

In Diamond Baby Treatment Serum, diamond peptides help to firm & tighten the skin after 4 WEEKS of daily use. 

Based on our clinical study, 100% said their wrinkles appeared smoother and their skin looked brighter and more even after four weeks. 94% agreed that their skin felt softer, more supple, and tighter after ONE USE. 

Alongside diamond peptides, Diamond Baby contains hyaluronic acid to increase skin's hydration by 93% and resveratrol, which fights free radicals and increases dermal thickness to combat uneven tone and premature skin aging. 

How to Use Diamond Peptides

For visible results, we recommend using diamond peptides daily. Apply Diamond Baby Treatment Body Serum to your face, chest, stomach, arms, and thighs to firm crepey skin, lift loose areas, smooth wrinkles, brighten dark spots, and instantly illuminate. 

For an extra glow, focus application on areas you want to highlight. Gently pat the serum onto high points of the face, such as cheekbones, brow bones, and the bridge of the nose, as well as collarbones and shoulders. This not only enhances radiance but also accentuates your natural contours for a subtly sculpted, luminous look.

Transform Your Skin With Diamond Baby 

Diamond Baby Treatment Body Serum

Firm & Brighten With Diamond Peptides

Añadir a la bolsa $44

Buy at Sephora Buy at Boots

• What it is: An illuminating serum that's clinically proven to firm, reduce wrinkles, and brighten skin with diamond peptides. 
• How it Works: Penetrates deep in the skin to boost collagen, elasticity, and hydration while thickening the dermis for younger, plumper, firmer-looking skin. 
• Key Ingredients: Diamond Peptides, Resveratrol, Hyaluronic Acid
• Scent: Black currant, midnight jasmine & vanilla creme
• Texture: Luxe and lightweight 
• Review: "Truly did it again — this firming serum leaves my skin feeling lifted, hydrated, and visibly smoother!!" - Nicole

Are Diamond Peptides the Future of Anti-Aging?

Diamond peptides are an advanced anti-aging skincare ingredient that combines real diamonds with pentapeptide. 

Truly's Diamond Baby Treatment Body Serum features diamond peptides and is clinically proven to firm loose skin, reduce wrinkles, and brighten skin's appearance with an instantly illuminated finish. 

The diamond acts as a carrier, enhancing the penetration of the peptide into the deeper layers of the skin. Once absorbed, the peptides stimulate collagen and elastin production, helping to firm and lift the skin, reduce fine lines, and improve overall texture and tone. 

The dual approach of enhanced delivery plus targeted peptide activity makes diamond peptides a groundbreaking innovation in the science of anti-aging.

*Clinical use study of 30 participants after 28 days.

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