Ingredient review
SH-Polypeptide-105
INCI: SH-Polypeptide-105
SH-Polypeptide-105 is a lab-made peptide that may help firm skin and reduce fine lines, but research is still early.
In plain English
SH-Polypeptide-105 is a short chain of amino acids (the building blocks of protein) made in a lab. When applied to skin, it acts like a signal telling skin cells to produce more collagen and elastin, which are the proteins that keep skin plump and firm. Think of it as a tiny messenger that encourages your skin to act younger.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
SH-Polypeptide-105 is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging SH-Polypeptide-105.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
SH-Polypeptide-105 is a synthetic peptide, meaning it is a man-made fragment of a protein. It is designed to mimic natural signaling peptides found in the body.
How it works
In a cosmetic product, SH-Polypeptide-105 penetrates the outer layer of skin and binds to receptors on fibroblasts (the cells that make collagen). This binding triggers a cascade of signals that increase collagen and elastin production, helping to improve skin firmness and reduce the appearance of fine lines.
Pros
Targeted anti-aging support
SH-Polypeptide-105 is designed to specifically encourage collagen production, which can help improve skin firmness and reduce fine lines over time.
Low irritation potential
As a synthetic peptide, it is generally well-tolerated and unlikely to cause irritation, making it suitable for sensitive skin types.
Cons and cautions
Limited research
There are few published human studies on SH-Polypeptide-105 specifically, so the evidence for its effectiveness is still emerging compared to more established peptides.
Slow results
Peptides work gradually, and you may need to use a product consistently for several weeks or months before noticing visible improvements.
Best for
- Adults looking for anti-aging support
- Those with mild to moderate loss of firmness
Use caution if
- Anyone with a known allergy to synthetic peptides
- Pregnant or nursing individuals should consult a doctor first
Usage tips
Safety summary
SH-Polypeptide-105 is considered safe for topical use in cosmetics at typical concentrations. It has low irritation and comedogenic risk, but individual allergies are possible. Always patch test new products.
Research notes
Research on SH-Polypeptide-105 is limited. Most evidence comes from in vitro (lab) studies and ingredient supplier data. Human studies are needed to confirm its anti-aging benefits.
Common label clues
- Typical concentration
- Typically used at 0.5% to 2% in leave-on products
- Regulatory status
- SH-Polypeptide-105 is a cosmetic ingredient regulated by the FDA as a cosmetic ingredient. It is not approved as a drug and cannot claim to treat or cure medical conditions.
- Common uses
- Anti-aging serums, Firming creams, Eye treatments
- Environmental note
- As a synthetic peptide, SH-Polypeptide-105 is produced in a lab, which reduces the need for natural resource extraction. However, its environmental impact depends on the manufacturing process.
Good to know
- Peptides work best when combined with other anti-aging ingredients like antioxidants (vitamin C, vitamin E) and sunscreen.
- SH-Polypeptide-105 is often found in higher-end anti-aging formulations.
Common questions
What is SH-Polypeptide-105 in beauty products?
SH-Polypeptide-105 is a short chain of amino acids (the building blocks of protein) made in a lab. When applied to skin, it acts like a signal telling skin cells to produce more collagen and elastin, which are the proteins that keep skin plump and firm. Think of it as a tiny messenger that encourages your skin to act younger.
What does SH-Polypeptide-105 do in a beauty product?
In a cosmetic product, SH-Polypeptide-105 penetrates the outer layer of skin and binds to receptors on fibroblasts (the cells that make collagen). This binding triggers a cascade of signals that increase collagen and elastin production, helping to improve skin firmness and reduce the appearance of fine lines.
Is SH-Polypeptide-105 safe for most people?
SH-Polypeptide-105 is considered safe for topical use in cosmetics at typical concentrations. It has low irritation and comedogenic risk, but individual allergies are possible. Always patch test new products.
Who should be careful with SH-Polypeptide-105?
Anyone with a known allergy to synthetic peptides Pregnant or nursing individuals should consult a doctor first
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.