Peptide Skincare & BeautySkin science and ingredient guides

Product and ingredient reference

Medik8 Niacinamide Peptides

Medik8 Niacinamide Peptides Ingredients in Medik8 Niacinamide Peptides explained: benefits, concerns, and detailed analysis of 30 ingredients including Water, Niacinamide, and Caprylic/Capric Triglyceride A highly rated serum with 30 ingredients, including nia

Medik8 Niacinamide Peptides Ingredients in Medik8 Niacinamide Peptides explained: benefits, concerns, and detailed analysis of 30 ingredients including Water, Niacinamide, and Caprylic/Capric Triglyceride A highly rated serum with 30 ingredients, including niacinamide, vitamin E, and hyaluronic acid. This smoothing serum is formulated around Niacinamide and Zinc PCA to refine skin texture and balance excess oil. We independently verify ingredients, backed by peer-reviewed research. Suggest an update. Water Niacinamide Caprylic/Capric Triglyceride Acetyl Glucosamine Glyceryl Stearate Citrate Glycerin Dimethicone Zinc PCA Palmitoyl Tetrapeptide-10 Sodium Hyaluronate Phenoxyethanol Polyglyceryl-3 Stearate Hydroxyacetophenone Crambe Abyssinica Seed Oil Hydrogenated Lecithin Behenyl Alcohol Cetearyl Alcohol Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Disodium EDTA Xanthan Gum Cetyl Palmitate Ethylhexylglycerin Carnosine Sorbitan Stearate Polysorbate 80 Polysorbate 60 Sorbitan Isostearate Sodium Benzoate Citric Acid Tocopherol Water, Niacinamide, Caprylic/Capric Triglyceride, Acetyl Glucosamine, Glyceryl Stearate Citrate, Glycerin, Dimethicone, Zinc PCA, Palmitoyl Tetrapeptide-10, Sodium Hyaluronate, Phenoxyethanol, Polyglyceryl-3 Stearate, Hydroxyacetophenone, Crambe Abyssinica Seed Oil, Hydrogenated Lecithin, Behenyl Alcohol, Cetearyl Alcohol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Disodium EDTA, Xanthan Gum, Cetyl Palmitate, Ethylhexylglycerin, Carnosine, Sorbitan Stearate, Polysorbate 80, Polysorbate 60, Sorbitan Isostearate, Sodium Benzoate, Citric Acid, Tocopherol Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product. So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation. You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated! Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging. And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin. You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this. In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it. If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare. When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration. When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes. In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution). Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin. Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3. The type of niacinamide used in skincare is synthetically created. Caprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss. Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid. In practice, that translates to a long shelf life and a consistently elegant skin feel. While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concern Search reviews by skin type, ingredient, or keyword. Medik8 is a British brand We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there. The data we've presented on this page has been verified by a member of the SkinSort Team. · Updated January 23, 2026 • Added by kellyhessler

Open original product source