La Roche-Posay 10% Pure Niacinamide Serum Versus Skin Republic Niacinamide 10% + Zinc 1% Serum

La Roche-Posay 10% Pure Niacinamide Serum Versus Skin Republic Niacinamide 10% + Zinc 1% Serum Detailed comparison of La Roche-Posay 10% Pure Niacinamide Serum versus Skin Republic Niacinamide 10% + Zinc 1% Serum. This brightening serum is formulated around Niacinamide and Phenylethyl Resorcinol to fade the look of dark spots and brighten dull-looking skin. This oil-control serum is formulated around Niacinamide and Zinc PCA to balance excess oil and refine the look of pores. Water Niacinamide Glycerin Alcohol Denat. Hydroxyethylpiperazine Ethane Sulfonic Acid Dimethicone Isopropyl Lauroyl Sarcosinate Octyldodecanol PEG-20 Methyl Glucose Sesquistearate Tin Oxide Sorbitan Oleate Dimethiconol Cetearyl Ethylhexanoate Isohexadecane Sodium Hyaluronate Phenylethyl Resorcinol Poloxamer 338 Ammonium Polyacryloyldimethyl Taurate Disodium EDTA Isopropyl Myristate Citric Acid Xanthan Gum Polysorbate 80 Acrylamide/Sodium Acryloyldimethyltaurate Copolymer Tocopherol Phenoxyethanol Mica CI 77891 Parfum Water, Niacinamide, Glycerin, Alcohol Denat., Hydroxyethylpiperazine Ethane Sulfonic Acid, Dimethicone, Isopropyl Lauroyl Sarcosinate, Octyldodecanol, PEG-20 Methyl Glucose Sesquistearate, Tin Oxide, Sorbitan Oleate, Dimethiconol, Cetearyl Ethylhexanoate, Isohexadecane, Sodium Hyaluronate, Phenylethyl Resorcinol, Poloxamer 338, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Isopropyl Myristate, Citric Acid, Xanthan Gum, Polysorbate 80, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Tocopherol, Phenoxyethanol, Mica, CI 77891, Parfum Propylene Glycol Zinc PCA Glyoxal Hydroxyethylcellulose PPG-1-PEG-9 Lauryl Glycol Ether Water, Niacinamide, Propylene Glycol, Zinc PCA, Glyoxal, Hydroxyethylcellulose, PPG-1-PEG-9 Lauryl Glycol Ether, Phenoxyethanol These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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. Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!). It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome. On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive. Another perk of this ingredient is that it stays functional across a wide pH range (3-10). You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own. Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU. Safety-wise, the fear monge