Multi-Peptide Serum for Hair Density for Thicker, Fuller Looking Hair
The Ordinary Multi-Peptide Serum for Hair Density for Thicker, Fuller Looking Hair scores 6.3/9.8 overall. It ranks highest in low irritation risk (9.5) and formulation safety (9.0).
✶ Hero ingredients
Draws in moisture
Lightweight humectant and solvent
One of the most effective humectants
Score breakdown
Scores last verified: July 2026
What makes The Ordinary Multi-Peptide Serum for Hair Density for Thicker, Fuller Looking Hair stand out
The Ordinary Multi-Peptide Serum for Hair Density for Thicker, Fuller Looking Hair is a decent serum with an overall score of 6.3/9.8. it takes a straightforward approach to skincare. The formula leads with Propanediol, Butylene Glycol, Glycerin — ingredients that support the skin barrier and moisture levels.
It performs well on low irritation risk (9.5).
Is this right for you?
Great for
- ✓Sensitive skin — low irritation risk with a gentle formulation
- ✓Safety-conscious shoppers — clean formulation with minimal flags
- ✓Ingredient-aware buyers — transparent, well-documented formula
Key ingredients
- ✶Propanediol
Draws in moisture — #2 in the INCI list
- ✶Butylene Glycol
Draws in moisture — #3 in the INCI list
- ✶Glycerin
Draws in moisture — #4 in the INCI list
- ✶Caffeine
Works on your skin — #5 in the INCI list
- ✶Acetyl Tetrapeptide-3
Works on your skin — #7 in the INCI list
Full ingredient list
32 ingredients — listed in INCI order (highest concentration first)
Compare with similar products
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Ingredient breakdown
- Works on your skin10
- Draws in moisture7
- Holds the formula together5
- Other ingredient4
- Keeps the product fresh4
- Formula balancers1
- Softens and smooths1