The KH Prebiotic Peptide Serum is an elevated version of the beloved Sheer Peptide Gel—now reformulated with a prebiotic boost for even better skin health. This clean, fragrance-free, non‑comedogenic serum nourishes your skin’s microbiome while delivering deep hydration and visible anti-aging benefits.

Why You'll Love It

• Supports the skin microbiome with topical prebiotics, reducing inflammation and calming redness while reinforcing the skin’s natural barrier.
  
  

• Peptide-rich formula featuring glycosaminoglycans that boost collagen production for firmer, more resilient skin.
  
  

• Hydration powerhouse—hyaluronic acid locks in moisture, while sodium chondroitin sulfate shields collagen and elastin from UV-driven damage.

Who It’s For

• All skin types—especially those dealing with redness, compromised barrier function, dehydration, or early signs of aging.
  
  

• Perfect for anyone who loves clinical performance but wants a lightweight daily serum that layers seamlessly.

How To Use

AM & PM: After toning or using a Koji Pad, apply 1–2 pumps to damp skin. Layer under sunscreen or moisturizer (or makeup) for a silky, hydrated base. Avoid applying over heavier skincare to prevent pilling.

Ingredient Highlights

Hyaluronic Acid

Deep hydration, plumping effect, fights photoaging.

Glycosaminoglycans

Boost collagen synthesis, improve elasticity.

Sodium Chondroitin Sulfate

UV protection, strengthens collagen and elastin.

Topical Prebiotics

Nourishes good bacteria, soothes inflammation.

Why It Matters: Science Meets Skin Wellness

At the core of every formula in the Karee Hays line is a clinical understanding of skin function—this serum is no exception. By blending peptides with prebiotics, it goes beyond surface-level hydration to nurture the ecosystem beneath, building long-term resilience and radiance.

Available Now

• Size: 1 oz and 6 oz clinical size
  
  
• Price: Starting at $125 (1 oz)
  
  
• Free from parabens, phthalates, artificial dyes, fragrance, mineral oil—and always vegan and cruelty-free.

Ideal Add-On To Your Routine

• Morning: The Hydration & Glow set is the perfect AM routine - Start with Koji Pads → Prebiotic Peptide Serum → Bright C Complex → end with SPF
  
  

• Evening: The Hydration Set is the perfect PM routine - Use after treatment pads → Prebiotic Peptide Serum → moisturize with Hydra-Lipid Cream for overnight recovery

What Fans Are Saying

Users who loved Sheer Peptide Gel are thrilled by this upgraded version. With consistent use, many report reduced redness, smoother texture, improved firmness, and clearer skin tone.

The Takeaway

The KH Prebiotic Peptide Serum is high‑performance skincare made approachable—clinically driven, microbiome-supporting, deeply hydrating, and ideal for layering. Whether you’re working on barrier repair, balancing your complexion, or preserving youthful firmness, this serum delivers results you can see and feel.

Pro Tips

• Use on damp skin to maximize hydration and absorption.
  
  

• Avoid layering after heavy creams to minimize pilling.
  
  

• Combine with antioxidant or brightening serums for amplified benefits.