Sunday Riley A+ High-Dose Retinol Serum Versus Elemis Pro-Collagen Super Serum Elixir

Sunday Riley A+ High-Dose Retinol Serum Versus Elemis Pro-Collagen Super Serum Elixir

This anti-aging serum is formulated around Hydroxypinacolone Retinoate and Retinol to soften the look of wrinkles and refine skin texture.

This anti-aging serum is formulated around Palmitoyl Tripeptide-38 to soften the look of wrinkles.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Propanediol

Dimethyl Isosorbide

Triheptanoin

Dimethicone

Glycerin

Pentylene Glycol

Hexyldecanol

Disiloxane

Cetyl PEG/PPG-10/1 Dimethicone

Diheptyl Succinate

Propylene Carbonate

Hydroxypinacolone Retinoate

PPG-24-Glycereth-24

Phenyl Trimethicone

Retinol

Ubiquinone

Honey Extract

Sodium Hyaluronate Crosspolymer

Algae Extract

Zingiber Officinale Extract

Opuntia Ficus-Indica Fruit Extract

Bisabolol

Butyrospermum Parkii Butter

Phospholipids

Saccharomyces Cerevisiae Extract

Lecithin

Sodium Acrylates Copolymer

Hydrogenated Polyisobutene

1,2-Hexanediol

4-T-Butylcyclohexanol

Polyglyceryl-10 Stearate

Caprylyl Glycol

Helianthus Annuus Seed Oil

Sorbitol

Cetylhydroxyproline Palmitamide

Polysilicone-11

Benzoic Acid

Dehydroacetic Acid

Sodium Phytate

Glyceryl Polyacrylate

Polysorbate 80

Hydroxyphenyl Propamidobenzoic Acid

Stearic Acid

Brassica Campestris Sterols

Pvp

Capryloyl Glycerin/Sebacic Acid Copolymer

Sodium Benzoate

Alcohol

Potassium Phosphate

Decyl Glucoside

Phenoxyethanol

Hexylene Glycol

Potassium Sorbate

Tocopherol

Water, Propanediol, Dimethyl Isosorbide, Triheptanoin, Dimethicone, Glycerin, Pentylene Glycol, Hexyldecanol, Disiloxane, Cetyl PEG/PPG-10/1 Dimethicone, Diheptyl Succinate, Propylene Carbonate, Hydroxypinacolone Retinoate, PPG-24-Glycereth-24, Phenyl Trimethicone, Retinol, Ubiquinone, Honey Extract, Sodium Hyaluronate Crosspolymer, Algae Extract, Zingiber Officinale Extract, Opuntia Ficus-Indica Fruit Extract, Bisabolol, Butyrospermum Parkii Butter, Phospholipids, Saccharomyces Cerevisiae Extract, Lecithin, Sodium Acrylates Copolymer, Hydrogenated Polyisobutene, 1,2-Hexanediol, 4-T-Butylcyclohexanol, Polyglyceryl-10 Stearate, Caprylyl Glycol, Helianthus Annuus Seed Oil, Sorbitol, Cetylhydroxyproline Palmitamide, Polysilicone-11, Benzoic Acid, Dehydroacetic Acid, Sodium Phytate, Glyceryl Polyacrylate, Polysorbate 80, Hydroxyphenyl Propamidobenzoic Acid, Stearic Acid, Brassica Campestris Sterols, Pvp, Capryloyl Glycerin/Sebacic Acid Copolymer, Sodium Benzoate, Alcohol, Potassium Phosphate, Decyl Glucoside, Phenoxyethanol, Hexylene Glycol, Potassium Sorbate, Tocopherol

Isononyl Isononanoate

Camelina Sativa Seed Oil

C12-15 Alkyl Benzoate

Methyl Methacrylate Crosspolymer

Prunus Amygdalus Dulcis Oil

Di-C20-40 Alkyl Dimer Dilinoleate

Parfum

Sorbitan Stearate

Chlorphenesin

Simmondsia Chinensis Seed Oil

Caprylic/Capric Triglyceride

Hydrolyzed Hyaluronic Acid

Chlorella Vulgaris Extract

Anogeissus Leiocarpa Bark Extract

Sodium Dehydroacetate

Hydroxypropyl Cyclodextrin

Linalool

Citronellol

Butylphenyl Methylpropional

Cananga Odorata Flower Oil

Eugenia Caryophyllus Bud Oil

Phytosterols

Limonene

Gelidium Cartilagineum Extract

Hydroxycitronellal

Padina Pavonica Thallus Extract

Geraniol

Benzyl Alcohol

Eugenol

Palmitoyl Tripeptide-38

Isononyl Isononanoate, Camelina Sativa Seed Oil, C12-15 Alkyl Benzoate, Methyl Methacrylate Crosspolymer, Prunus Amygdalus Dulcis Oil, Water, Propanediol, Di-C20-40 Alkyl Dimer Dilinoleate, Glycerin, Parfum, Sorbitan Stearate, Chlorphenesin, Simmondsia Chinensis Seed Oil, Caprylic/Capric Triglyceride, Hydrolyzed Hyaluronic Acid, Chlorella Vulgaris Extract, Tocopherol, Anogeissus Leiocarpa Bark Extract, Sodium Dehydroacetate, Helianthus Annuus Seed Oil, Hydroxypropyl Cyclodextrin, Phenoxyethanol, Linalool, Citronellol, Butylphenyl Methylpropional, Cananga Odorata Flower Oil, Eugenia Caryophyllus Bud Oil, Phytosterols, Limonene, Gelidium Cartilagineum Extract, Hydroxycitronellal, Padina Pavonica Thallus Extract, Geraniol, Benzyl Alcohol, Eugenol, Palmitoyl Tripeptide-38

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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.

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.

Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).

It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.

On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.

Another perk of this ingredient is that it stays functional across a wide pH range (3-10).

You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.

Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.

Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.

Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.

Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.

It’s often used to:

Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.

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!

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