For Skin’s Sake (FSS) Mandelic Acid Gel 5% With Niacinamide Versus Somethinc 5% Mandelic Acid Mild Exfoliating Serum
Updated on January 30, 2025
Overview
What they are
These products are both cruelty-free, fungal acne (malassezia) safe, and reef safe . They have a total of 5 ingredients in common
Cool Features
They both contain AHA
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, common allergens, oils, parabens, silicones or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
For Skin’s Sake (FSS) Mandelic Acid Gel 5% With Niacinamide 17 ingredients
Somethinc 5% Mandelic Acid Mild Exfoliating Serum 14 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
For Skin’s Sake (FSS) Mandelic Acid Gel 5% With Niacinamide 17 ingredients
Somethinc 5% Mandelic Acid Mild Exfoliating Serum 14 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningMandelic Acid
Antimicrobial
Propylene Glycol
Humectant
Glycerin
Humectant
Niacinamide
Smoothing
Biosaccharide Gum-1
Skin Conditioning
Polyacrylate Crosspolymer-11
Emulsion StabilisingPhenoxyethanol
Preservative
Saccharide Isomerate
Humectant
Hydroxyethylcellulose
Emulsion StabilisingAllantoin
Skin Conditioning
Bis-PEG-18 Methyl Ether Dimethyl Silane
EmollientPanthenol
Skin Conditioning
Triethylene Glycol
Masking
Sodium Hyaluronate
Humectant
Citric Acid
Buffering
Sodium Citrate
BufferingWater, Mandelic Acid, Propylene Glycol, Glycerin, Niacinamide, Biosaccharide Gum-1, Polyacrylate Crosspolymer-11, Phenoxyethanol, Saccharide Isomerate, Hydroxyethylcellulose, Allantoin, Bis-PEG-18 Methyl Ether Dimethyl Silane, Panthenol, Triethylene Glycol, Sodium Hyaluronate, Citric Acid, Sodium Citrate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.
Some studies have shown this ingredient can promote wound healing with higher concentrations.
Allantoin is derived from the comfrey plant but produced synthetically for cosmetic products to ensure purity.
Learn more about AllantoinHydroxyethylcellulose is used to improve the texture of products. It is created from a chemical reaction involving ethylene oxide and alkali-cellulose. Cellulose is a sugar found in plant cell walls and help give plants structure.
This ingredient helps stabilize products by preventing ingredients from separating. It can also help thicken the texture of a product.
This ingredient can also be found in pill medicines to help our bodies digest other ingredients.
Learn more about HydroxyethylcelluloseMandelic Acid is an alpha hydroxy acid (AHA).
Like other AHAs, it helps exfoliate the surface of the skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.
Mandelic acid helps with:
Due to it having a larger molecular size than glycolic acid, mandelic acid is able to penetrate the skin more slowly and evenly. This makes it gentler and less irritating, making it a great option for sensitive or beginner skin.
Despite being milder, mandelic acid is still an effective exfoliant that improves skin texture and tone over time.
What makes mandelic acid stand out from other AHAs? It has antibacterial and antioxidant properties.
These traits make it a great option for acne-prone or problem skin by reducing active breakouts and fading post-acne marks. Studies show that mandelic acid (especially when combined with salicylic acid) can significantly reduce pimples and hyperpigmentation while causing fewer side effects than stronger acids.
Mandelic acid is effective in concentrations of 5% and up with an ideal pH range of 3-4 for at-home use.
Like other AHAs, it’s important to wear sunscreen daily to protect your newly exfoliated skin.
However, unlike glycolic acid, mandelic acid is light-sensitive. Be sure your mandelic acid is packaged in opaque containers to ensure it stays stable and effective.
In short, mandelic acid is a gentle yet powerful AHA that exfoliates, brightens, and helps clarify skin while keeping irritation low. Its antibacterial action makes it especially beneficial for those with acne-prone, sensitive, or uneven skin, offering smoother, clearer, and more even-toned results over time.
Read more about some other popular AHA's here:
Learn more about Mandelic AcidPanthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.
There are two forms of panthenol: D and L.
D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.
Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):
Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.
This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
This ingredient is also referred to as pro-vitamin B5.
Learn more about PanthenolWater. 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. Stay hydrated!
Learn more about WaterIngredient Ratings
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When to use
For Skin’s Sake (FSS) Mandelic Acid Gel 5% With Niacinamide 17 ingredients
Somethinc 5% Mandelic Acid Mild Exfoliating Serum 14 ingredients
