Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

The Ordinary Natural Moisturizing Factors + HA For Scalp Versus The Ordinary Multi-Peptide Serum for Hair Density

The Ordinary Natural Moisturizing Factors + HA For Scalp Versus The Ordinary Multi-Peptide Serum for Hair Density Detailed comparison of The Ordinary Natural Moisturizing Factors + HA For Scalp versus The Ordinary Multi-Peptide Serum for Hair Density. Water Sq

This source-based comparison does not add ratings or recommend a winner.

The Ordinary Natural Moisturizing Factors + HA For Scalp Versus The Ordinary Multi-Peptide Serum for Hair Density Detailed comparison of The Ordinary Natural Moisturizing Factors + HA For Scalp versus The Ordinary Multi-Peptide Serum for Hair Density. Water Squalane C12-13 Alkyl Glyceryl Hydrolyzed Hyaluronate Arginine Aspartic Acid Glycine Alanine Serine Valine Isoleucine Proline Threonine Histidine Phenylalanine Glutamic Acid Glucose Fructose Sucrose PCA Sodium PCA Zinc PCA Magnesium PCA Manganese PCA Urea Sodium Lactate Lactic Acid Hexyl Nicotinate Lauryl Glucoside Myristyl Glucoside Polyglyceryl-6 Laurate Isoceteth-20 Dextrin Hexylene Glycol Potassium Sorbate Phenoxyethanol Chlorphenesin Water, Squalane, C12-13 Alkyl Glyceryl Hydrolyzed Hyaluronate, Arginine, Aspartic Acid, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Glutamic Acid, Glucose, Fructose, Sucrose, PCA, Sodium PCA, Zinc PCA, Magnesium PCA, Manganese PCA, Urea, Sodium Lactate, Lactic Acid, Hexyl Nicotinate, Lauryl Glucoside, Myristyl Glucoside, Polyglyceryl-6 Laurate, Isoceteth-20, Dextrin, Hexylene Glycol, Potassium Sorbate, Phenoxyethanol, Chlorphenesin 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 Calcium Gluconate Zinc Chloride 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 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 These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources. It is a part of your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy. Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces. A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks. Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis. One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies. Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne. Chlorphenesin is a synthetic preservative. It helps protect a product against bacteria in order to extend shelf life. In most cases, Chlorphenesin is paired with other preservatives such as phenoxyethanol and caprylyl glycol. Chlorphenesin is a biocide. This means it is able to help fight the microorganisms on our skin. It is also able to fight odor-releasing bacteria. Chlorphenesin is soluble in both water and glycerin. Studies show Chlorphenesin is easily absorbed by our skin. You should speak with a skincare professional if you have concerns about using Chlorphenesin. Glycine is the smallest amino acid and a key building block of collagen. It's part if your skin's Natural Moisturizing Factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy. A study from 2022 found that an amino acid complex featuring taurine, arginine, and glycine significantly reduced skin irritation, improved redness, and accelerated the skin repair process. Lactic Acid is another well-loved alpha hydroxy acid (AHA). It is gentler than glycolic acid but still highly effective. Its main role is to exfoliate the surface of the skin by loosening the “glue” that holds dead skin cells together. Shedding those old cells leads to smoother, softer, and more even-toned skin. Because lactic acid molecules are larger than glycolic acid, they don’t penetrate as deeply. This means they’re less likely to sting or irritate, making it a great choice for beginners or those with sensitive skin. Like glycolic acid, it can: Lactic acid also acts as a humectant (like hyaluronic acid). It can draw water into the skin to improve hydr