Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Ingu Brightening Crystal Serum Versus COSRX The 6 Peptide Skin Booster Serum

Ingu Brightening Crystal Serum Versus COSRX The 6 Peptide Skin Booster Serum Detailed comparison of Ingu Brightening Crystal Serum versus COSRX The 6 Peptide Skin Booster Serum. This brightening serum is formulated around Centella Asiatica Extract and Niacinam

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Ingu Brightening Crystal Serum Versus COSRX The 6 Peptide Skin Booster Serum Detailed comparison of Ingu Brightening Crystal Serum versus COSRX The 6 Peptide Skin Booster Serum. This brightening serum is formulated around Centella Asiatica Extract and Niacinamide to brighten dull-looking skin and fade the look of dark spots. This anti-aging serum is formulated around Niacinamide and Acetyl Hexapeptide-8 to soften the look of wrinkles and strengthen the skin barrier. Water Centella Asiatica Extract Propanediol Niacinamide Coffea Arabica Seed Extract Cichorium Intybus Root Extract Bis-PEG-12 Dimethicone Undecylenoyl Phenylalanine Phenoxyethanol Polyacrylate Crosspolymer-6 Chondrus Crispus Extract Sodium Hyaluronate Triethanolamine Glycerin Propylene Glycol Chlorphenesin Bacillus Ferment Water, Centella Asiatica Extract, Propanediol, Niacinamide, Coffea Arabica Seed Extract, Cichorium Intybus Root Extract, Bis-PEG-12 Dimethicone, Undecylenoyl Phenylalanine, Phenoxyethanol, Polyacrylate Crosspolymer-6, Chondrus Crispus Extract, Sodium Hyaluronate, Triethanolamine, Glycerin, Propylene Glycol, Chlorphenesin, Bacillus Ferment Dipropylene Glycol Pentylene Glycol 1,2-Hexanediol Acetyl Hexapeptide-8 Copper Tripeptide-1 Sh-Polypeptide-121 Dipeptide Diaminobutyroyl Benzylamide Diacetate Oligopeptide-68 Palmitoyl Tripeptide-8 Allantoin Acetyl Glucosamine Serine Alanine Glycine Threonine Arginine Proline Betaine Sodium PCA Sodium Lactate PCA Glutamic Acid Lysine Hcl Tocopherol Dextran Glycine Soja Oil Hydrogenated Lecithin Ammonium Acryloyldimethyltaurate/Vp Copolymer Butylene Glycol Xanthan Gum Ethylhexylglycerin Adenosine Polyquaternium-51 Disodium EDTA Citric Acid Caprylyl Glycol T-Butyl Alcohol Potassium Sorbate Sodium Oleate Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Acetyl Hexapeptide-8, Copper Tripeptide-1, Sh-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68, Palmitoyl Tripeptide-8, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Serine, Alanine, Glycine, Threonine, Arginine, Proline, Betaine, Sodium PCA, Sodium Lactate, PCA, Glutamic Acid, Lysine Hcl, Tocopherol, Dextran, Glycine Soja Oil, Hydrogenated Lecithin, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, T-Butyl Alcohol, Potassium Sorbate, Sodium Oleate These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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 to 79% in some leave-on products. Just know very high concentrations (>40%) can feel tacky in low humidity. Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine. 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. Polyacrylate Crosspol