Olay Vitamin C + Peptide 24 Brightening Serum Versus Bliss Bright Idea Serum

Olay Vitamin C + Peptide 24 Brightening Serum Versus Bliss Bright Idea Serum

This brightening serum is formulated around Niacinamide and Lactic Acid to brighten dull-looking skin and refine skin texture.

This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Palmitoyl Tripeptide-5 to brighten dull-looking skin and soften the look of wrinkles.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Dimethicone

Niacinamide

Lactic Acid

Polyacrylate Crosspolymer-6

3-O-Ethyl Ascorbic Acid

Palmitoyl Pentapeptide-4

Panthenol

Trehalose

PEG-11 Methyl Ether Dimethicone

Sodium Lactate

Sodium Benzoate

Parfum

Hydroxylauric Acid

Ascorbic Acid

Avena Sativa Peptide

Water, Glycerin, Dimethicone, Niacinamide, Lactic Acid, Polyacrylate Crosspolymer-6, 3-O-Ethyl Ascorbic Acid, Palmitoyl Pentapeptide-4, Panthenol, Trehalose, PEG-11 Methyl Ether Dimethicone, Sodium Lactate, Sodium Benzoate, Parfum, Hydroxylauric Acid, Ascorbic Acid, Avena Sativa Peptide

Propanediol

Palmitoyl Tripeptide-5

Sodium Hyaluronate

Tocopherol

Glycyrrhiza Glabra Root Extract

Pseudozyma Epicola/Camellia Japonica Seed Oil Ferment Extract Filtrate

Camellia Sinensis Seed Oil

Glucose

Bisabolol

Squalane

Hydrogenated Farnesene

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

C14-22 Alcohols

Sodium Citrate

C12-20 Alkyl Glucoside

Xanthan Gum

Citric Acid

Dimethyl Isosorbide

Ethoxydiglycol

Glyceryl Stearate

Hydroxyacetophenone

Tetrasodium Glutamate Diacetate

Caprylyl Glycol

Polyglyceryl-4 Laurate/Succinate

Ethylhexylglycerin

Acacia Senegal Gum

Lecithin

Sclerotium Gum

Pullulan

Hexylene Glycol

Phenoxyethanol

Limonene

Water, Glycerin, 3-O-Ethyl Ascorbic Acid, Propanediol, Palmitoyl Tripeptide-5, Sodium Hyaluronate, Tocopherol, Glycyrrhiza Glabra Root Extract, Pseudozyma Epicola/Camellia Japonica Seed Oil Ferment Extract Filtrate, Camellia Sinensis Seed Oil, Glucose, Bisabolol, Squalane, Hydrogenated Farnesene, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, C14-22 Alcohols, Polyacrylate Crosspolymer-6, Sodium Citrate, C12-20 Alkyl Glucoside, Xanthan Gum, Citric Acid, Dimethyl Isosorbide, Ethoxydiglycol, Glyceryl Stearate, Hydroxyacetophenone, Tetrasodium Glutamate Diacetate, Caprylyl Glycol, Polyglyceryl-4 Laurate/Succinate, Ethylhexylglycerin, Acacia Senegal Gum, Lecithin, Sclerotium Gum, Pullulan, Hexylene Glycol, Phenoxyethanol, Parfum, Limonene

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Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

3-O-Ethyl Ascorbic Acid is one of the most popular "stable" vitamin C derivatives in skincare.

Plain ascorbic acid is fantastic but notoriously fragile; it browns, oxidizes, and loses potency fast. So attaching an ethyl group to the third carbon of the molecule gives it some cool perks:

In a formula, it does the 3 classic vitamin C jobs: it acts as an antioxidant, helps brighten skin tone by inhibiting tyrosinase, and supports collagen.

The evidence is reasonably solid for a cosmetic ingredient; Liao and colleagues (2018) showed it's significantly more stable than ascorbic acid while still being effective.

A 2021 study by Zerbinati and colleagues tested a serum with 30% 3-O-ethyl-l-ascorbic acid and 1% lactic acid significantly increased collagen production, reduced UVB-induced DNA damage, and decreased melanin on a reconstructed pigmented skin model.

Typical real world usage sits around 0.5-5% (and 1-2% is common for daily serums).

Amounts up to 30% have been shown to be non-irritating on human skin samples, but two isolated cases reported allergic contact dermatitis so a patch test is sensible if you have reactive skin.

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.

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.

The term 'parfum' or '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 by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Polyacrylate Crosspolymer-6 is a texture enhancer and pH adjuster.

It is be used to thicken water-based products and create a gel-texture with a velvet feel.

One manufacturer claims this ingredient to have a pH range of 2-8 and to be biodegradable.

This ingredient is also known as Sepimax Zen.

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!

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