Rsosiso Copper Peptides Firming Serum — 3% GHK‑Cu, 1% PDRN Lightweight Hydrating Facial Serum

Rsosiso Copper Peptides Firming Serum is a lightweight facial essence concentrated with 3% GHK-Cu and 1% PDRN designed to support firmer-looking, smoother skin when used consistently.

This serum blends a high concentration of copper tripeptide (GHK-Cu) with salmon DNA–derived PDRN and a targeted multi‑peptide complex to address loss of elasticity, visible fine lines, and uneven texture. Lightweight and fast-absorbing, the formula also includes hydration enhancers like niacinamide, sodium hyaluronate and glycerin so it layers easily under moisturizer and sunscreen for everyday AM and PM use.

How does this serum help firm and refine skin appearance?

The formula centers on 3% copper tripeptide (GHK-Cu) plus a suite of supporting peptides that work together to improve the look of elasticity and expression lines. PDRN contributes to skin renewal appearance while humectants lock in moisture for a smoother finish.

• 3% GHK‑Cu (copper tripeptide‑1) for targeted peptide support.
• 1% PDRN (salmon DNA derivative) to aid skin surface renewal look.
• Multi‑peptide matrix (acetyl tetrapeptide‑2, palmitoyl tripeptide‑1, etc.) for expression lines and texture.
• Niacinamide and hyaluronate to hydrate and improve radiance.

Can I use this serum every day and with other products?

Yes — its fluid, non‑greasy texture is formulated for daily AM and PM layering. Apply after cleansing and toning, then follow with moisturizer; in daytime, finish with sunscreen. The lightweight nature makes it compatible with most skincare routines.

• Use morning and night after cleansing and before heavier creams.
• Pairs well with moisturizers and broad‑spectrum sunscreen (daytime).
• Suitable for all skin types; patch test if you have sensitive skin.

What active ingredients are included and what does each do?

The serum combines peptide actives with hydrating and brightening agents to address firmness, lines and dullness without feeling heavy. Ingredients are chosen to complement one another for surface refinement and moisture balance.

• Copper Tripeptide‑1 (GHK‑Cu) at 3%: peptide support for firmer look.
• PDRN 1%: salmon DNA‑derived ingredient to refresh appearance.
• Multi‑peptide blend: targets expression lines and loss of elasticity.
• Niacinamide, sodium hyaluronate, glycerin: hydrating, smoothing, and brightening.

How should I apply the serum for best results?

Use a small amount on clean skin, patting gently over face and neck until absorbed. Consistent use is key; integrate it into your morning and evening routine and always follow with moisturizer and daytime sunscreen.

• Apply after cleansing and toning, before moisturizer.
• Gently pat into face and neck until fully absorbed.
• Morning users: finish with SPF for daily protection.

Who is this for: Rsosiso Copper Peptides Firming Serum is aimed at anyone seeking a peptide‑forward, hydrating essence to improve the look of firmness, minimize expression lines, and enhance skin texture and radiance. It’s formulated for daily use and suited to those who prefer a lightweight serum that layers well within established skincare routines.