Independent education resourceInformation here does not replace care from a qualified health professional.
Peptide Therapy GuideClear peptide education

Educational guide

Fenty Beauty Watch Ya Tone 5% Niacinamide Dark Spot Serum with Vitamin C Versus Summer Fridays Midnight Ritual Retinol Renewal Serum

Fenty Beauty Watch Ya Tone 5% Niacinamide Dark Spot Serum with Vitamin C Versus Summer Fridays Midnight Ritual Retinol Renewal Serum This brightening serum is formulated around Niacinamide and 3-O-Ethyl Ascorbic Acid to fade the look of dark spots and brighten

Written by Peptide Therapy Guide Editorial Team
For education only

This guide cannot diagnose a condition or recommend a personal treatment plan. Discuss medical questions with a qualified professional.

Fenty Beauty Watch Ya Tone 5% Niacinamide Dark Spot Serum with Vitamin C Versus Summer Fridays Midnight Ritual Retinol Renewal Serum

This brightening serum is formulated around Niacinamide and 3-O-Ethyl Ascorbic Acid to fade the look of dark spots and brighten dull-looking skin.

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

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Niacinamide

Aloe Barbadensis Leaf Juice

C12-15 Alkyl Benzoate

Propanediol

Betaine

3-O-Ethyl Ascorbic Acid

Glycereth-26

Myrciaria Dubia Fruit Extract

Malpighia Punicifolia Fruit Extract

Dipotassium Glycyrrhizate

Camellia Sinensis Leaf Extract

Tocopherol

Glycerin

Citric Acid

Butylene Glycol

Sodium Polyacrylate

Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer

Polymethylsilsesquioxane

Polyglyceryl-10 Laurate

Glyceryl Polyacrylate

Ethylhexylglycerin

Dimethicone

Phenoxyethanol

Benzotriazolyl Dodecyl P-Cresol

Ethyl Hexanediol

Water, Niacinamide, Aloe Barbadensis Leaf Juice, C12-15 Alkyl Benzoate, Propanediol, Betaine, 3-O-Ethyl Ascorbic Acid, Glycereth-26, Myrciaria Dubia Fruit Extract, Malpighia Punicifolia Fruit Extract, Dipotassium Glycyrrhizate, Camellia Sinensis Leaf Extract, Tocopherol, Glycerin, Citric Acid, Butylene Glycol, Sodium Polyacrylate, Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer, Polymethylsilsesquioxane, Polyglyceryl-10 Laurate, Glyceryl Polyacrylate, Ethylhexylglycerin, Dimethicone, Phenoxyethanol, Benzotriazolyl Dodecyl P-Cresol, Ethyl Hexanediol

Squalane

Caprylic/Capric Triglyceride

Cetearyl Alcohol

Glyceryl Stearate Se

Simmondsia Chinensis Seed Oil

Sorbitan Stearate

Sclerotium Gum

Retinyl Linoleate

Retinol

Avena Sativa Bran Extract

Centella Asiatica Extract

Bisabolol

Rosa Canina Fruit Oil

Persea Gratissima Oil

Prunus Amygdalus Dulcis Oil

Butyrospermum Parkii Butter

Sodium Hyaluronate

Ricinus Communis Seed Oil

Hydrogenated Castor Oil

Glycine Soja Oil

Tocopheryl Acetate

Phytic Acid

Synthetic Beeswax

Copernicia Cerifera Cera

Maltodextrin

Caprylhydroxamic Acid

1,2-Hexanediol

Sodium Benzoate

Potassium Sorbate

Levulinic Acid

Sodium Levulinate

Sodium Hydroxide

Water, Glycerin, Squalane, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Glyceryl Stearate Se, Simmondsia Chinensis Seed Oil, Propanediol, Sorbitan Stearate, Sclerotium Gum, Retinyl Linoleate, Retinol, Avena Sativa Bran Extract, Centella Asiatica Extract, Niacinamide, Bisabolol, Rosa Canina Fruit Oil, Persea Gratissima Oil, Prunus Amygdalus Dulcis Oil, Butyrospermum Parkii Butter, Sodium Hyaluronate, Ricinus Communis Seed Oil, Hydrogenated Castor Oil, Glycine Soja Oil, Tocopherol, Tocopheryl Acetate, Phytic Acid, Synthetic Beeswax, Copernicia Cerifera Cera, Maltodextrin, Caprylhydroxamic Acid, 1,2-Hexanediol, Sodium Benzoate, Potassium Sorbate, Levulinic Acid, Sodium Levulinate, Citric Acid, Sodium Hydroxide

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.

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 skin's natural pH.

In skincare formulas, citric acid can:

While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.

Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.

Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.

However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.

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.

Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.

And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.

You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.

In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.

If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.

When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.

When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.

In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).

Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.

Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.

The type of niacinamide used in skincare is synthetically created.

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!

Similar Comparisons

Connected reading

Helpful context for this guide

Source-derived material selected through this article’s indexed topics.

P

About the author

Peptide Therapy Guide Editorial Team

Editorial team for Peptide Therapy Guide.

View all articles →