For Skin’s Sake (FSS) Mandelic Acid Gel 5% With Niacinamide Versus For Skin’s Sake (FSS) Lactic Acid Gel 10%
Updated on January 30, 2025
Overview
What they are
These products are both cruelty-free, fungal acne (malassezia) safe, and reef safe exfoliators. They have a total of 15 ingredients in common
Cool Features
They both contain AHA and hyaluronic acid
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
What's Inside
They both contain fragrances
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
For Skin’s Sake (FSS) Lactic Acid Gel 10% 19 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
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
For Skin’s Sake (FSS) Lactic Acid Gel 10% 19 ingredients
Key Ingredients
Benefits
Concerns
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
Water
Skin ConditioningLactic Acid
Buffering
Propylene Glycol
Humectant
Glycerin
Humectant
Alpha-Arbutin
Antioxidant
Biosaccharide Gum-1
Skin Conditioning
Polyacrylate Crosspolymer-11
Emulsion StabilisingPhenoxyethanol
Preservative
Sodium Hydroxide
BufferingSaccharide Isomerate
Humectant
Hydroxyethylcellulose
Emulsion StabilisingAllantoin
Skin Conditioning
Bis-PEG-18 Methyl Ether Dimethyl Silane
EmollientSodium Bisulfite
Antioxidant
Panthenol
Skin Conditioning
Triethylene Glycol
Masking
Sodium Hyaluronate
Humectant
Citric Acid
Buffering
Sodium Citrate
BufferingWater, Lactic Acid, Propylene Glycol, Glycerin, Alpha-Arbutin, Biosaccharide Gum-1, Polyacrylate Crosspolymer-11, Phenoxyethanol, Sodium Hydroxide, Saccharide Isomerate, Hydroxyethylcellulose, Allantoin, Bis-PEG-18 Methyl Ether Dimethyl Silane, Sodium Bisulfite, 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 AllantoinBiosaccharide Gum-1 is a sugar created from fermented sorbitol. Most sorbitol is made from potato starch.
This ingredient is a a skin conditioning ingredient and helps moisturize the skin.
It is also naturally found in fruits such as apples and pears.
Learn more about Biosaccharide Gum-1Bis-Peg-18 Methyl Ether Dimethyl Silane belongs to the siloxanes and silicones classes. It is synthetically created and has a waxy composition.
This ingredient is a humectant and emollient, meaning it helps hydrate the skin. Humectants draw moisture to your skin, while emollients prevent moisture from escaping.
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidGlycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinHydroxyethylcellulose 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 HydroxyethylcellulosePanthenol 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 PanthenolPhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
We don't have a description for Polyacrylate Crosspolymer-11 yet.
Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.
This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.
Those with sensitive skin or conditions may develop a rash when using this ingredient.
Learn more about Propylene GlycolSaccharide Isomerate comes from sugars found in corn. It is a skin hydrator.
The structure of this ingredient can be altered to be more similar to the carbohydrates found in our skin. This ability to mimic our skin gives it hydrating properties.
Specifically, saccharide Isomerate is a humectant. Humectants draw moisture from the air to our skin.
Research shows Saccharide Isomerate to be an effective moisturizer.
Learn more about Saccharide IsomerateSodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.
Its main functions are to maintain the pH of a product and neutralize metal ions.
The acidity of our skin is maintained by our glands and skin biome; normal pH level of skin is slightly acidic (~4.75-5.5).
Being slightly acidic allows our skin to create an "acid mantle". This acid mantle is a thin barrier that protects our skin from bacteria and contaminants.
Learn more about Sodium CitrateSodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronateTriethylene Glycol is a fragrance.
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. Stay hydrated!
Learn more about WaterIngredient Ratings
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