Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Neutrogena Hair Restore Advanced Growth Support Serum Versus The Ordinary Multi-Peptide Serum for Hair Density

Neutrogena Hair Restore Advanced Growth Support Serum Versus The Ordinary Multi-Peptide Serum for Hair Density Detailed comparison of Neutrogena Hair Restore Advanced Growth Support Serum versus The Ordinary Multi-Peptide Serum for Hair Density. Water Pentylen

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

Neutrogena Hair Restore Advanced Growth Support Serum Versus The Ordinary Multi-Peptide Serum for Hair Density Detailed comparison of Neutrogena Hair Restore Advanced Growth Support Serum versus The Ordinary Multi-Peptide Serum for Hair Density. Water Pentylene Glycol PEG-40 Hydrogenated Castor Oil Panthenol Niacinamide Caffeine Chrysanthemum Parthenium Flower/Leaf/Stem Juice Arginine Hydrolyzed Collagen Bisabolol Glycerin Mangifera Indica Fruit Extract Acetyl Dipeptide-31 Amide Isochrysis Galbana Extract Centella Asiatica Leaf Vesicles Propanediol Hydroxyethylcellulose Disodium EDTA Sodium Benzoate Citric Acid Sodium Hydroxide Water, Pentylene Glycol, PEG-40 Hydrogenated Castor Oil, Panthenol, Niacinamide, Caffeine, Chrysanthemum Parthenium Flower/Leaf/Stem Juice, Arginine, Hydrolyzed Collagen, Bisabolol, Glycerin, Mangifera Indica Fruit Extract, Acetyl Dipeptide-31 Amide, Isochrysis Galbana Extract, Centella Asiatica Leaf Vesicles, Propanediol, Hydroxyethylcellulose, Disodium EDTA, Sodium Benzoate, Citric Acid, Sodium Hydroxide Butylene Glycol 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 Glycine Calcium Gluconate Zinc Chloride Lactic Acid Gluconolactone Dextran Maltodextrin Xanthan Gum Dimethyl Isosorbide Polysorbate 20 PPG-26-Buteth-26 Trisodium Ethylenediamine Disuccinate Sodium Metabisulfite Phenoxyethanol Chlorphenesin 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 Be the first to review 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. Caffeine is a naturally occurring plant compound found in coffee beans, tea leaves, cocoa pods, and guarana. As an antioxidant, caffeine protects your skin from free radical damage caused by UV exposure and envionrmnetal stressors. Early research also shows that caffeine can help calm redness, soothe irritated skin, and support hair growth by stimulating microcirculation in the scalp. You might have seen eye creams marketing caffeine as a depuffing ingredient. This is because it is a vasoconstrictor meaning it can temporarily constrict blood vessels, though clinical evidence for this specific use is still limited. Most skincare products contain this ingredient at concentrations between 1-6%. It is able to penetrate skin easily regardless of skin type or thickness. Just so you know, a very small number of case reports describe caffeine-induced allergy. This ingredient is generally well-tolerated, non-irritating, and non-sensitizing for the majority of people. Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum. Topically, glycerin does several things at once: Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3. Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin. This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up