Peptides

Sh-Polypeptide-2

INCI: SH-POLYPEPTIDE-2

Reviewed by Daisy · Last updated 2 Jun 2026

A peptide that conditions and supports the skin's structural integrity

Best For Skin Types

All, Dry, Mature

Addresses

Fine lines, Texture, Skin firmness

Usage Frequency

Daily

What Is Sh-Polypeptide-2?

Sh-Polypeptide-2 is a peptide—a short chain of amino acids—designed to function as a skin conditioning agent in cosmetic formulations. Peptides are recognised in skincare for their role in supporting the skin's natural proteins and structural components, particularly in the context of age-related changes.

This ingredient works at a surface level to help maintain skin condition and texture, making it a common addition to moisturisers, serums, and anti-ageing products aimed at mature or compromised skin.

How It Works

As we age, the skin's dermal and epidermal layers gradually thin, and the production of key structural proteins—particularly collagen—decreases. This contributes to visible fine lines, loss of firmness, and changes in skin texture.

Peptides like Sh-Polypeptide-2 are thought to work by signalling to skin cells or by providing amino acid building blocks that support the skin's natural repair processes. Topically applied peptides condition the skin surface and may help reinforce the skin's structural integrity over time, though the extent of this benefit depends on formulation, concentration, and individual skin characteristics.

Clinical Evidence & References

Research confirms that aged skin is characterised by thinning of both the epidermis and dermis, loss of collagen, and decline in epidermal stem cell function—all factors that contribute to visible ageing. Peptide-based ingredients are included in many anti-ageing formulations on the premise that they can support these natural processes.

However, specific clinical evidence for Sh-Polypeptide-2 is limited in publicly available literature. General peptide research suggests they can condition skin and may support structural proteins, but the degree of visible benefit varies widely depending on the peptide type, concentration, and how well it penetrates the skin barrier. More targeted research would help clarify this ingredient's efficacy profile.

How to Use

Sh-Polypeptide-2 is typically used as part of a broader skincare routine rather than as a standalone treatment. It is most effective when paired with other hydrating and barrier-supporting ingredients, and with consistent use over time. Apply to clean skin morning and/or evening as part of your regular moisturising step.

Safety & Precautions

Peptides are generally well-tolerated and pose a low risk of irritation. Patch test if you have very sensitive skin, particularly if the product contains multiple active ingredients.

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