Bielenda Supremelab Energy Boost Brightening Serum with Ultra-Stable Vitamin C Versus PrescriptSkin Vitamin C Lifting Serum, Enhanced Brightening Gel Serum

Bielenda Supremelab Energy Boost Brightening Serum with Ultra-Stable Vitamin C Versus PrescriptSkin Vitamin C Lifting Serum, Enhanced Brightening Gel Serum Detailed comparison of Bielenda Supremelab Energy Boost Brightening Serum with Ultra-Stable Vitamin C versus PrescriptSkin Vitamin C Lifting Serum, Enhanced Brightening Gel Serum. This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Ferulic Acid to brighten dull-looking skin and fade the look of dark spots. This brightening serum is formulated around Ascorbic Acid and Glycolic Acid to brighten dull-looking skin and soften the look of wrinkles. Water 3-O-Ethyl Ascorbic Acid Glycerin Citric Acid Propanediol Disodium Phosphate Ferulic Acid Hydroxyethylcellulose Sodium Phosphate Polysorbate 60 Polysorbate 20 Disodium EDTA Phenoxyethanol Ethylhexylglycerin Benzyl Alcohol Parfum Limonene Linalool Citral Water, 3-O-Ethyl Ascorbic Acid, Glycerin, Citric Acid, Propanediol, Disodium Phosphate, Ferulic Acid, Hydroxyethylcellulose, Sodium Phosphate, Polysorbate 60, Polysorbate 20, Disodium EDTA, Phenoxyethanol, Ethylhexylglycerin, Benzyl Alcohol, Parfum, Limonene, Linalool, Citral Sodium PCA Hydrolyzed Collagen Hydrolyzed Elastin Ascorbic Acid Sodium Hydroxide Carbomer Aloe Barbadensis Leaf Juice Tocopherol Aesculus Hippocastanum Seed Extract Prunus Armeniaca Fruit Extract Rosa Centifolia Flower Extract Rosmarinus Officinalis Leaf Extract Tocopheryl Acetate Retinyl Palmitate Lactic Acid Malic Acid Gluconic Acid Glycolic Acid Salicylic Acid Tartaric Acid Water, Glycerin, Sodium PCA, Hydrolyzed Collagen, Hydrolyzed Elastin, Ascorbic Acid, Polysorbate 20, Sodium Hydroxide, Carbomer, Aloe Barbadensis Leaf Juice, Tocopherol, Citric Acid, Aesculus Hippocastanum Seed Extract, Hydroxyethylcellulose, Prunus Armeniaca Fruit Extract, Rosa Centifolia Flower Extract, Rosmarinus Officinalis Leaf Extract, Tocopheryl Acetate, Disodium EDTA, Retinyl Palmitate, Lactic Acid, Malic Acid, Gluconic Acid, Glycolic Acid, Salicylic Acid, Tartaric Acid, Ethylhexylglycerin, Citral, Limonene, Parfum, Benzyl Alcohol These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Benzyl Alcohol is an aromatic alcohol with several roles: it's a preservative, solvent, and mild fragrance component with a floral scent. This ingredient has been deemed safe for use in cosmetic formulations at concentrations up to 5%, and up to 10% in hair dyes. You'll typically see 0.5-2% in most rinse-off or leave-on products. As a preservative, it works by disrupting the membrane of microbial proteins. This helps keep bacteria and fungi from growing in your products. The sensitization picture is actually quite assuring as well:of nearly 71,000 patients patch tested with benzyl alcohol, only 0.21% showed a positive reaction with most of them being weakly positive. This led researchers to conclude that benzyl alcohol cannot be regarded as a significant contact allergen. It is worth noting this ingredient is classified as one of the EU's regulated fragrance allergens and restricted to 1% in finished products. Labels must also declare it in concentrations above 0.001% in leave-on products and 0.01% in rinse-off products. At concentrations around 5%, localized redness and itching can appear as a direct irritant response and not as a true allergic reaction. Citral is the molecule responsible for the fresh lemon scent in lemon, lime, and lemongrass. It is a fragrance ingredient that can be created from plant essential oils or synthetically. Though Citral has documented antimicrobial activity against acne bacteria (which is where the marketing claims about it being good for acne-prone skin originate), real formulas use it at fragrance-level concentrations under 1% so there's likely no skin benefit. You should know this ingredient is a known EU fragrance allergen. Animal studies classifies this ingredient as a weak-to-moderate skin sensitizer and clinical patch testing on eczema patients confirmed it to be both a contact allergen and irritant. The term 'citral' is a collective term for two geometric isomers: geranial/Citral A and neral/Citral B. The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term. For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance. 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