Tirtir Azelaic Acid 12% Serum Versus Cos De BAHA AZ15 Azelaic Acid 15% + MSM 1% Serum
Updated on June 05, 2025
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 9 ingredients in common
Cool Features
They both contain ceramides
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, 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
Tirtir Azelaic Acid 12% Serum 28 ingredients
Cos De BAHA AZ15 Azelaic Acid 15% + MSM 1% Serum 24 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
Tirtir Azelaic Acid 12% Serum 28 ingredients
Cos De BAHA AZ15 Azelaic Acid 15% + MSM 1% Serum 24 ingredients
Key Ingredients
Benefits
Concerns
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningAzelaic Acid
Buffering
Propylene Glycol
Humectant
Sodium Hydroxide
BufferingPentylene Glycol
Skin ConditioningPanthenol
Skin Conditioning
Sorbitol
Humectant
Chondrus Crispus Extract
Skin Conditioning
Hydroxyethylcellulose
Emulsion StabilisingChlorella Vulgaris Extract
Skin Conditioning
Glucose
Humectant
Saccharum Officinarum Extract
Moisturising1,2-Hexanediol
Skin Conditioning
Butylene Glycol
Humectant
Fructooligosaccharides
Humectant
Fructose
Humectant
Ethylhexylglycerin
Skin ConditioningBiosaccharide Gum-1
Skin Conditioning
Tromethamine
BufferingXanthan Gum
EmulsifyingTocopherol
Antioxidant
Betaine
Humectant
Zinc PCA
Humectant
Dipropylene Glycol
MaskingHyaluronic Acid/Polyisopropylacrylamide Copolymer
HumectantCaprylyl/Capryl Glucoside
CleansingHydrogenated Lecithin
Emulsifying
Ceramide NP
Skin Conditioning
Water, Azelaic Acid, Propylene Glycol, Sodium Hydroxide, Pentylene Glycol, Panthenol, Sorbitol, Chondrus Crispus Extract, Hydroxyethylcellulose, Chlorella Vulgaris Extract, Glucose, Saccharum Officinarum Extract, 1,2-Hexanediol, Butylene Glycol, Fructooligosaccharides, Fructose, Ethylhexylglycerin, Biosaccharide Gum-1, Tromethamine, Xanthan Gum, Tocopherol, Betaine, Zinc PCA, Dipropylene Glycol, Hyaluronic Acid/Polyisopropylacrylamide Copolymer, Caprylyl/Capryl Glucoside, Hydrogenated Lecithin, Ceramide NP
Water
Skin ConditioningPropylene Glycol
Humectant
Azelaic Acid
Buffering
Sodium Hydroxide
Buffering1,2-Hexanediol
Skin Conditioning
Polysorbate 20
Emulsifying
Dimethyl Sulfone
Solvent
Propanediol
Solvent
Betaine
Humectant
Panthenol
Skin Conditioning
Dipotassium Glycyrrhizate
Humectant
Allantoin
Skin Conditioning
Ceramide NP
Skin Conditioning
Sodium Hyaluronate
Humectant
Hydrolyzed Hyaluronic Acid
Humectant
Centella Asiatica Extract
Cleansing
Madecassoside
Antioxidant
Hydroxyethylcellulose
Emulsion StabilisingSodium Polyacrylate
Absorbent
Polyglyceryl-10 Laurate
Skin Conditioning
Camellia Sinensis Leaf Extract
Antimicrobial
Sambucus Nigra Flower Extract
RefreshingMomordica Charantia Fruit Extract
Skin ConditioningLeontopodium Alpinum Extract
Skin ConditioningWater, Propylene Glycol, Azelaic Acid, Sodium Hydroxide, 1,2-Hexanediol, Polysorbate 20, Dimethyl Sulfone, Propanediol, Betaine, Panthenol, Dipotassium Glycyrrhizate, Allantoin, Ceramide NP, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Centella Asiatica Extract, Madecassoside, Hydroxyethylcellulose, Sodium Polyacrylate, Polyglyceryl-10 Laurate, Camellia Sinensis Leaf Extract, Sambucus Nigra Flower Extract, Momordica Charantia Fruit Extract, Leontopodium Alpinum Extract
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.Â
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservativesÂ
Azelaic acid is a naturally occurring acid derived from grains. This ingredient is effective in treating acne, rosacea, and other skin conditions.
It has been shown to reduce the growth of acne-causing bacteria and helps reduce inflammation. On top of that, it helps reduce the production of sebum and unclog pores.
Azelaic Acid also has antioxidant properties. Antioxidants protect our skin cells from free-radical damage.
One of the main benefits of azelaic acid is that it is gentle and well-tolerated by most people.
Fun fact: The lab-created form of azelaic acid is typically used within cosmetic products for its shelf-stability.
Learn more about Azelaic AcidBetaine is a common humectant (a substance that promotes retention of moisture). It's known to be gentle on the skin and can help balance hydration.
This ingredient is best for improving hydration and soothing irritated skin. Studies also show it helps even out skin tone.
Fun fact: Betaine is naturally created in the skin and body. The kind found within cosmetic products can be either plant-derived or synthetic.
Learn more about BetaineCeramide NP is a type of ceramide.
Ceramides are intercellular lipids naturally found in our skin that bonds dead skin cells together to create a barrier. They are known for their ability to hold water and thus are a great ingredient for dry skin.
Ceramides are an important building block for our skin barrier. A stronger barrier helps the skin look more firm and hydrated. By bolstering the skin ceramides act as a barrier against irritating ingredients. This can help with inflammation as well.
If you would like to eat ceramides, sweet potatoes contain a small amount.
Read more about other common types of ceramides here:
Ceramide AP
Ceramide EOP
Hydroxyethylcellulose 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 PanthenolPropylene 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 GlycolSodium 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.
Learn more about Sodium HydroxideWater. 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
Here's what our community thinks of the ingredients in these products.
When to use
Tirtir Azelaic Acid 12% Serum 28 ingredients
Cos De BAHA AZ15 Azelaic Acid 15% + MSM 1% Serum 24 ingredients
