The Outset Firming Vegan Collagen Prep Serum Versus Caudalie Resveratrol Lift Instant Firming Serum

The Outset Firming Vegan Collagen Prep Serum Versus Caudalie Resveratrol Lift Instant Firming Serum

This serum is formulated around Tetrahexyldecyl Ascorbate to brighten and minimize pores.

This anti-aging serum is formulated around Palmitoyl Grapevine Shoot Extract and Hyaluronic Acid to soften the look of wrinkles and brighten dull-looking skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Propanediol

Glycerin

Triheptanoin

Coco-Caprylate/Caprate

Sodium Polyacryloyldimethyl Taurate

Capryloyl Glycerin/Sebacic Acid Copolymer

Cassia Angustifolia Seed Polysaccharide

Helianthus Annuus Seed Oil

Heterotheca Inuloides Flower Extract

Chenopodium Quinoa Seed Extract

Poncirus Trifoliata Fruit Extract

Hydrolyzed Brassica Napus Seedcake Extract

Sr-Hydrozoan Polypeptide-1

Castor Oil/Ipdi Copolymer

Diheptyl Succinate

Phenoxyethanol

Dilinoleic Acid/Butanediol Copolymer

Caprylyl Glycol

Hydrolyzed Jojoba Esters

Lysolecithin

Sclerotium Gum

Tetrahexyldecyl Ascorbate

Tocopheryl Acetate

Tetrasodium Glutamate Diacetate

Pullulan

Xanthan Gum

Jojoba Esters

Silica

Citric Acid

Sodium Benzoate

Sodium Formate

Sodium Glycolate

Sodium Hydroxide

Sodium PCA

Potassium Hydroxide

Potassium Sorbate

Water, Propanediol, Glycerin, Triheptanoin, Coco-Caprylate/Caprate, Sodium Polyacryloyldimethyl Taurate, Capryloyl Glycerin/Sebacic Acid Copolymer, Cassia Angustifolia Seed Polysaccharide, Helianthus Annuus Seed Oil, Heterotheca Inuloides Flower Extract, Chenopodium Quinoa Seed Extract, Poncirus Trifoliata Fruit Extract, Hydrolyzed Brassica Napus Seedcake Extract, Sr-Hydrozoan Polypeptide-1, Castor Oil/Ipdi Copolymer, Diheptyl Succinate, Phenoxyethanol, Dilinoleic Acid/Butanediol Copolymer, Caprylyl Glycol, Hydrolyzed Jojoba Esters, Lysolecithin, Sclerotium Gum, Tetrahexyldecyl Ascorbate, Tocopheryl Acetate, Tetrasodium Glutamate Diacetate, Pullulan, Xanthan Gum, Jojoba Esters, Silica, Citric Acid, Sodium Benzoate, Sodium Formate, Sodium Glycolate, Sodium Hydroxide, Sodium PCA, Potassium Hydroxide, Potassium Sorbate

Butylene Glycol

Hexyldecanol

Hexyldecyl Laurate

Squalane

C20-22 Alkyl Phosphate

Palmitoyl Grapevine Shoot Extract

C20-22 Alcohols

Potassium Cetyl Phosphate

Polyacrylate Crosspolymer-6

Parfum

Hydrolyzed Hyaluronic Acid

Sodium Dehydroacetate

Hyaluronic Acid

Adenosine

Acetyl Dipeptide-1 Cetyl Ester

Pentylene Glycol

Sodium Phytate

Khaya Senegalensis Bark Extract

Maltodextrin

Linalool

Limonene

Paeonia Lactiflora Root Extract

Coumarin

Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-47

Water, Butylene Glycol, Glycerin, Hexyldecanol, Hexyldecyl Laurate, Squalane, Tocopheryl Acetate, C20-22 Alkyl Phosphate, Palmitoyl Grapevine Shoot Extract, C20-22 Alcohols, Potassium Cetyl Phosphate, Polyacrylate Crosspolymer-6, Helianthus Annuus Seed Oil, Caprylyl Glycol, Parfum, Hydrolyzed Hyaluronic Acid, Sodium Dehydroacetate, Hyaluronic Acid, Adenosine, Sodium Hydroxide, Acetyl Dipeptide-1 Cetyl Ester, Pentylene Glycol, Sodium Phytate, Khaya Senegalensis Bark Extract, Maltodextrin, Linalool, Limonene, Paeonia Lactiflora Root Extract, Coumarin, Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-47

Reviews

Alternatives

Ingredients Explained

These ingredients are found in both products.

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

Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.

Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.

Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).

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.

Helianthus Annuus Seed Oil is a plant oil derived from the seeds of a sunflower.

It is rich in fatty acids, primarily linoleic acid and oleic acid. This gives it emollient and skin conditioning properties.

The reason this ingredient is so effective is because it forms a thin film on the skin that reduces transepidermal water loss (TEWL) while supplying linoleic acid to the stratum corneum to improve barrier strength.

The high linoleic acid content is particularly noteworthy for acne-prone skin.

Research suggests that acne-prone skin tends to be deficient in linoleic acid in sebum. Topical application may help replenish this to support a healthier follicular environment and less comedone-promoting sebum.

One randomized study found sunflower seed oil preserved skin barrier integrity in adult volunteers with and without atopic dermatitis (outperforming olive oil).

This ingredient is well-studied, gentle, and an effective emollient suitable for most skin types.

On fungal acne: This ingredient may not be Fungal acne (Malassezia folliculitis) safe. This is because it contains fatty acids with carbon chain lengths in the C11-C24 range.

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

Tocopheryl Acetate is a stable, shelf-friendly form of vitamin E.

Formulators love it because plain vitamin E oxidizes quickly once it hits air. This acetate version stays stable and resists going off, helping to extend a product's shelf life.

It's actually inactive on its own and works like a slow-release "storage" form; the enzymes in your skin called esterases gradually convert it into active vitamin E over time.

One in vivo study showed 5% of the acetate in the living layer of the epidermis converted to vitamin E after 5 days of application. This study also found the skin gained protection against UV damage even though the conversion was slow and small.

Once converted, vitamin E acts as a skin's main fat-soluble antioxidant that fights free radicals to protect skin from damage.

Topical vitamin E generally boosts the skin's photoprotection, and it reduced UV-damage in animal models.

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.

Overall, it has a pretty solid safety profile and has been found to be non-irritating and non-comedogenic. Allergic reactions may happen but stay rare due to how widely the ingredient gets used.

The concentration will vary depending on the formula; industry data shows 0.1% in baby lotions, 3% in lipsticks, and 5% in foot powders. You can also find this ingredient at 100% in a pure vitamin E oil.

Most leave-on skincare keeps it at the lower end, often between 0.5-1%.

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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