Works for:
based on ingredients and %- Moisturizing
- Anti-aging
- Anti-oxidation
Can it cause trouble?
- Irritation risk: medium
- Comedogenic risk ingredients: 1
Key actives
Product Summary
"The Ordinary - Multi-Peptide Serum for Hair Density" is effective for: Moisturizing
This product could be helpful for: Anti-aging, but its actives are not the most effective or are not well-studied.
Ingredient callouts
- This product contains acids (gluconolactone 0.25% - 0.50% and lactic acid 0.30% - 0.50%). Their concentration is low, and they will not have a strong exfoliating effect. Instead, they work to support the skin natural acid mantle and to attract water (as humectants). PHAs (gluconolactone) especially are great for improving skin hydration. They might be even able to stimulate the production of skin's natural humectants and support the healthy skin microbiome.
- Peptides (acetyl tetrapeptide-3 1.70% - 2.00% and biotinoyl tripeptide-1 1.90% - 2.40%). There are many different kind of Peptides and they are naturally present in our skin. They all are a combination of aminoacids. Some of them work as natural antibiotics, promote wound-healing and production of collagen. The science is still not settled on how effective Peptides are in skincare, but it is very likely that they have a benefit. They might help restore the skin barrier and fight the signs of aging. At the very least, Peptides work as humectants: they attract water to the upper layer of the skin and improve its hydration.
- Humectants (dextran 0.25% - 0.50%, glycine 0.40% - 0.60%, arginine 0.45% - 0.65% and glycerin 3.00% - 3.70%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
About the brand
According to Cruelty-Free Kitty "The Ordinary" is cruelty free, but its parent company is not.
Works for
Moisturizing
This product can help improve hydration of the skin with the two types of ingredients.
The first type is called “humectants”:
these ingredients help attract water.
When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from
within deeper layers of the skin. The following ingredients in this product do the job:
arginine, dextran.
This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: arginine, pentylene glycol.
The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: acetyl tetrapeptide-3, biotinoyl tripeptide-1
Helps to attract water to the upper layer of the skin and can help restore the skin barrier function
A type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
Helps attract water to the most upper layer of the skin. Derived from sugar
An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin
A type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles
Used to preserve products, dissolve other ingredients and create a nice product texture
A plant extract that might contain a compound baicalin that could be helpful in neutralizing free radicals and reducing inflammation in skin. The baicalin concentration in skincare products is often too low for an effective action. Can be used for its fragrant properties
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
Helps attract water to the upper layer of the skin and helps to improve appearance of the product
Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)
Plant extract that might have moisturizing properties. Avoid if you suffer from wheat or gluten intolerance
Might be helpful against blemishes, work as an anti-oxidant, reduce inflammation and improve skin's ability to hold on to moisture, but more research is needed to confirm its effectiveness when applied topically to human skin
Anti-aging
This product contains biotinoyl tripeptide-1. This ingredient might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.
A type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles
A type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles
Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)
Might be helpful against blemishes, work as an anti-oxidant, reduce inflammation and improve skin's ability to hold on to moisture, but more research is needed to confirm its effectiveness when applied topically to human skin
Anti-oxidation
This product contains antioxidants (camellia sinensis leaf extract) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.
Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation
Might be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyes
A plant extract that might contain a compound baicalin that could be helpful in neutralizing free radicals and reducing inflammation in skin. The baicalin concentration in skincare products is often too low for an effective action. Can be used for its fragrant properties
Red clover flower extract. Can contain anti-oxidants but also potential irritant compounds
Might be helpful against blemishes, work as an anti-oxidant, reduce inflammation and improve skin's ability to hold on to moisture, but more research is needed to confirm its effectiveness when applied topically to human skin
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
Plant extract that might have moisturizing properties. Avoid if you suffer from wheat or gluten intolerance
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Moisturizing | |
| Anti-aging |
Total Promises Fulfilled score: 87/100.
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Potential irritants
Comedogenic ingredients
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Key Actives
Potential irritants
Comedogenic ingredients
All ingredients
Ingredient list view
Water, Propanediol, Butylene glycol, Glycerin, Caffeine, Biotinoyl tripeptide-1, Acetyl tetrapeptide-3, Larix europaea wood extract, Pisum sativum extract, Scutellaria baicalensis root extract, Triticum vulgare germ extract, Glycine soja germ extract, Trifolium pratense flower extract, Camellia sinensis leaf extract, Apigenin, Oleanolic acid, Arginine, Glycine, Calcium gluconate, Zinc chloride, Lactic acid, Gluconolactone, Dextran, Maltodextrin, Hydroxyethylcellulose, Xanthan gum, Pentylene glycol, Dimethyl isosorbide, Polysorbate 20, Ppg-26-buteth-26, Peg-40 hydrogenated castor oil, Trisodium ethylenediamine disuccinate, Sodium metabisulfite, Sodium benzoate, Phenoxyethanol, Chlorphenesin
- Glycerol and the skin: holistic approach to its origin and functions
- Scutellaria baicalensis, the golden herb from the garden of Chinese medicinal plants
- Flavonoids in Treating Psoriasis
- Improvement of skin barrier dysfunction by Scutellaria baicalensis GEOGI extracts through lactic acid fermentation
- Safety Assessment of Scutellaria baicalensis-Derived Ingredients as Used in Cosmetics
- Wheat in skin care
- Effectiveness of the formulation that containing oleanolic acid 3% on inhibition of 5-α reductase activity on skin of patients with acne
- The effect of ursolic and oleanolic acids on human skin fibroblast cells
- Effect of Topical Application of Glycine and Proline on Recalcitrant Leg Ulcers of Prolidase Deficiency
- Functional glycine receptor in cultured human keratinocytes
- Epidermal and dermal effects of topical lactic acid
- Dual Effects of Alpha-Hydroxy Acids on the Skin
- A comparative study of gluconolactone versus benzoyl peroxide in the treatment of acne
- The Polyhydroxy Acid Gluconolactone Protects Against Ultraviolet Radiation in an In Vitro Model of Cutaneous Photoaging
- Applications of hydroxy acids: classification, mechanisms, and photoactivity
- The efficacy of glycolic acid, salicylic acid, gluconolactone, and licochalcone A combined with 0.1% adapalene vs adapalene monotherapy in mild-to-moderate acne vulgaris: a double-blinded within-person comparative study
- A polyhydroxy acid skin care regimen provides antiaging effects comparable to an alpha-hydroxyacid regimen
- The use of polyhydroxy acids (PHAs) in photoaged skin
- Blackwell Publishing, Ltd. Alpha-hydroxyacids and carboxylic acids
- An evaluation of a polyhydroxy acid skin care regimen in combination with azelaic acid 15% gel in rosacea patients
- Aging Skin: Causes, Treatments, and Prevention
- Clinical and cosmeceutical uses of hydroxyacids
- Polyhydroxy Acids (PHAs) Provide Conditioning Effects to Skin Without Increasing Sensitivity to UV Light
- Activity enhancement of ferulic acid with dimethyl isosorbride in cosmetic compositions
- Amended Safety Assessment of Butyl Polyoxyalkylene Ethers as Used in Cosmetics
- Amended Safety Assessment of PEGylated Oils as Used in Cosmetics
- Final report on the safety assessment of sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, ammonium bisulfite, sodium metabisulfite and potassium metabisulfite