Skin Republic Hyaluronic Acid 1% + Niacinamide 2% Serum Versus Biologique Recherche Sérum Erythros Redness-Reducing Facial Serum

Skin Republic Hyaluronic Acid 1% + Niacinamide 2% Serum Versus Biologique Recherche Sérum Erythros Redness-Reducing Facial Serum Detailed comparison of Skin Republic Hyaluronic Acid 1% + Niacinamide 2% Serum versus Biologique Recherche Sérum Erythros Redness-Reducing Facial Serum. This hydrating serum is formulated around Niacinamide and Panthenol to hydrate skin and strengthen the skin barrier. This calming serum is formulated around Niacinamide and Camellia Sinensis Leaf Extract to calm redness and strengthen the skin barrier. Water Propanediol Glycerin Propylene Glycol Niacinamide Panthenol Sodium Hyaluronate Allantoin Arnica Montana Flower Extract Chamomilla Recutita Flower Extract Citric Acid Ethylhexylglycerin Tetrasodium EDTA Phenoxyethanol Potassium Sorbate Sodium Benzoate Water, Propanediol, Glycerin, Propylene Glycol, Niacinamide, Panthenol, Sodium Hyaluronate, Allantoin, Arnica Montana Flower Extract, Chamomilla Recutita Flower Extract, Citric Acid, Ethylhexylglycerin, Tetrasodium EDTA, Phenoxyethanol, Potassium Sorbate, Sodium Benzoate Butylene Glycol Empetrum Nigrum Fruit Juice Pentylene Glycol Cupressus Sempervirens Seed Extract Polygonatum Multiflorum Rhizome/Root Extract Plankton Extract Pueraria Lobata Root Extract Camellia Sinensis Leaf Extract Rosmarinyl Glucoside Caffeyl Glucoside Gallyl Glucoside Sodium Gluconate Water, Niacinamide, Butylene Glycol, Propylene Glycol, Glycerin, Empetrum Nigrum Fruit Juice, Pentylene Glycol, Arnica Montana Flower Extract, Cupressus Sempervirens Seed Extract, Polygonatum Multiflorum Rhizome/Root Extract, Plankton Extract, Pueraria Lobata Root Extract, Camellia Sinensis Leaf Extract, Rosmarinyl Glucoside, Caffeyl Glucoside, Gallyl Glucoside, Sodium Gluconate, Sodium Benzoate, Phenoxyethanol, Potassium Sorbate, Citric Acid These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Arnica Montana Flower is more commonly known as Wolf's Bane. While this flower has been used in traditional medicine, its skin benefits are in question. The FDA considers Wolf's Bane to be an unsafe herb. They advise against taking it orally or applying it to broken skin. Wolf's Bane has been said to have anti-inflammatory properties. However, studies are conflicting about whether this is true. According to the Final report on the safety assessment of Arnica montana, this plant has not been found to cause dermal irritation. This flower contains numerous fatty acids such as palmitic, linoleic, myristic, and linolenic acids. The presence and amount of fatty acids depends on where the flower is harvested. Like other flowers, this ingredient has a natural fragrance. It can also be used to mask, or cover, the unpleasant scents from other ingredients. Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes. Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath. However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products. Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH. In skincare formulas, citric acid can: While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants. Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations. Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger. However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure. 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 correcte