Skin science article
Murad Rapid Age Spot and Pigment Lightening Serum Versus Paula's Choice Discoloration Repair Serum
Murad Rapid Age Spot and Pigment Lightening Serum Versus Paula's Choice Discoloration Repair Serum This brightening serum is formulated around Glycolic Acid and Ascorbic Acid to fade the look of dark spots and brighten dull-looking skin. This brightening serum
Murad Rapid Age Spot and Pigment Lightening Serum Versus Paula's Choice Discoloration Repair Serum
This brightening serum is formulated around Glycolic Acid and Ascorbic Acid to fade the look of dark spots and brighten dull-looking skin.
This brightening serum is formulated around Niacinamide and Tranexamic Acid to fade the look of dark spots and brighten dull-looking skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Alcohol Denat.
Glycolic Acid
Butylene Glycol
Glycerin
Methyl Gluceth-10
Dextran
Hexapeptide-2
Rice Amino Acids
Aloe Barbadensis Leaf Juice
Urea
Yeast Amino Acids
Trehalose
Inositol
Taurine
Betaine
Zinc Gluconate
Ascorbic Acid
Chitosan
Propyl Gallate
Nonyl Nonoxynol-10
Lecithin
Tocopherol
Magnesium Ascorbyl Phosphate
Dipotassium Glycyrrhizate
Palmitoyl Hydroxypropyltrimonium Amylopectin/Glycerin Crosspolymer
Vitis Vinifera Seed Extract
Chitosan PCA
Allantoin
Polyquaternium-10
Sodium Metabisulfite
Sodium Sulfite
Sodium Hydroxide
PPG-26-Buteth-26
PEG-40 Hydrogenated Castor Oil
Hydroxyethylcellulose
Disodium EDTA
Limonene
Linalool
Parfum
Water, Alcohol Denat., Glycolic Acid, Butylene Glycol, Glycerin, Methyl Gluceth-10, Dextran, Hexapeptide-2, Rice Amino Acids, Aloe Barbadensis Leaf Juice, Urea, Yeast Amino Acids, Trehalose, Inositol, Taurine, Betaine, Zinc Gluconate, Ascorbic Acid, Chitosan, Propyl Gallate, Nonyl Nonoxynol-10, Lecithin, Tocopherol, Magnesium Ascorbyl Phosphate, Dipotassium Glycyrrhizate, Palmitoyl Hydroxypropyltrimonium Amylopectin/Glycerin Crosspolymer, Vitis Vinifera Seed Extract, Chitosan PCA, Allantoin, Polyquaternium-10, Sodium Metabisulfite, Sodium Sulfite, Sodium Hydroxide, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Hydroxyethylcellulose, Disodium EDTA, Limonene, Linalool, Parfum
Niacinamide
Tranexamic Acid
C13-15 Alkane
Caprylic/Capric Triglyceride
Dicaprylyl Carbonate
Ethyl Macadamiate
Behenyl Alcohol
Glyceryl Stearate
Silybum Marianum Seed Oil
Lactobacillus/Coconut Fruit Juice Ferment Filtrate
Bakuchiol
Xanthan Gum
Caprylyl Glycol
Hydrogenated Lecithin
Glycine Soja Oil
Hexylene Glycol
Boerhavia Diffusa Root Extract
Glycine Soja Sterols
Citric Acid
Sodium Phytate
Malic Acid
Phenoxyethanol
Ethylhexylglycerin
Water, Niacinamide, Glycerin, Tranexamic Acid, C13-15 Alkane, Caprylic/Capric Triglyceride, Dicaprylyl Carbonate, Ethyl Macadamiate, Behenyl Alcohol, Glyceryl Stearate, Butylene Glycol, Silybum Marianum Seed Oil, Tocopherol, Lactobacillus/Coconut Fruit Juice Ferment Filtrate, Lecithin, Bakuchiol, Xanthan Gum, Caprylyl Glycol, Hydrogenated Lecithin, Allantoin, Glycine Soja Oil, Hexylene Glycol, Boerhavia Diffusa Root Extract, Glycine Soja Sterols, Citric Acid, Sodium Phytate, Malic Acid, Phenoxyethanol, Ethylhexylglycerin
Reviews
Be the first to review
Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Allantoin is a soothing ingredient known for its protective and moisturizing properties; it's basically a quiet workhorse ingredient you can find in a huge range of cosmetics.
Though it can be derived from the comfrey plant, allantoin is produced synthetically for cosmetic products to ensure purity.
Research shows it can encourage your skin cells to turn over and renew by stimulating keratinocyte and fibroblast proliferation.
It also has mild keratolytic properties to help loosen and shed dead skin cells without being harsh.
Studies also suggest allantoin can help calm inflammation by dialing down some of the chemical signals your skin sends out when it is irritated.
This ingredient is typically used in the 0.1-0.5% range, and the FDA recognizes it as a skin protectant in OTC products up to 2%.
Overall, allantoin is a wonderful addition to most routines; it is stable across a wide pH range (~4-8), works well with other ingredients, and is considered non-sensitizing/non-irritating.
Fun fact: Allantoin is naturally occurring in comfrey root, beets, chamomile, and wheat sprouts. Our bodies even produce it as a byproduct of uric acid metabolism.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
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.
Lecithin is a term for a group of substances found in the cell membranes of plants, animals, and humans. They are made up of phospholipids.
Thanks to its amphiphilic structure (water-loving head and oil-loving tail), it is a true multitasker:
It plays well with most ingredients and is typically used at 0.1-1%. However, concentrations up to 50% have been reported in moisturizers.
Tocopherol is a fat-soluble antioxidant known as Vitamin E.
You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.
Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.
It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.
This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.
This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.
In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.
Concentrations usually range from 0.1-1% in most leave-on products.
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!