COLLISTAR Milano Attivi Puri Vitamin C + Alpha-Arbutin Versus Undefined Beauty R&R Day Serum
Updated on January 30, 2025
Overview
What they are
These products are both cruelty-free, fungal acne (malassezia) safe, and reef safe serums. They have a total of 6 ingredients in common
Cool Features
They both contain Vitamin C
Suited For
They're both likely to be good for dry skin, brightening 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
COLLISTAR Milano Attivi Puri Vitamin C + Alpha-Arbutin 10 ingredients
Undefined Beauty R&R Day Serum 19 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
COLLISTAR Milano Attivi Puri Vitamin C + Alpha-Arbutin 10 ingredients
Undefined Beauty R&R Day Serum 19 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPropanediol
Solvent3-O-Ethyl Ascorbic Acid
Skin Conditioning
Ascorbyl Glucoside
Antioxidant
Alpha-Arbutin
Antioxidant
Niacinamide
Smoothing
Glycerin
Humectant
Kojic Acid
Antioxidant
Aloe Barbadensis Leaf Juice
Skin Conditioning
Terminalia Bellerica Fruit
AstringentGlycyrrhiza Glabra Callus Culture Extract
Skin ConditioningPortulaca Oleracea Extract
Skin ConditioningTremella Fuciformis Polysaccharide
Emulsion StabilisingMorinda Citrifolia Fruit Extract
Skin ConditioningAlgin
Masking
Sclerotium Gum
Emulsion StabilisingDimethyl Isosorbide
Solvent1,2-Hexanediol
Skin ConditioningCaprylyl Glycol
EmollientWater, Propanediol, 3-O-Ethyl Ascorbic Acid, Ascorbyl Glucoside, Alpha-Arbutin, Niacinamide, Glycerin, Kojic Acid, Aloe Barbadensis Leaf Juice, Terminalia Bellerica Fruit, Glycyrrhiza Glabra Callus Culture Extract, Portulaca Oleracea Extract, Tremella Fuciformis Polysaccharide, Morinda Citrifolia Fruit Extract, Algin, Sclerotium Gum, Dimethyl Isosorbide, 1,2-Hexanediol, Caprylyl Glycol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterPropanediol 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.
Learn more about PropanediolGlycerin 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 GlycerinYou might know this ingredient as Ethyl Ascorbic Acid, a more stable version of ascorbic acid.
Like other types of vitamin C, this ingredient has many benefits including reducing wrinkles, skin soothing, dark spot fading, and fighting against free radicals.
3-O-Ethyl Ascorbic Acid interferes with the process of skin darkening, helping to reduce hyperpigmentation. It also encourages the skin to produce more collagen.
Once applied, 3-O-Ethyl Ascorbic Acid is converted to Vitamin C deeper in the skin's layers. This process is slow but makes this ingredient more tolerable for skin.
The optimum pH range for this ingredient is 4 - 5.5
Learn more about 3-O-Ethyl Ascorbic AcidAlpha-Arbutin is made from hydroquinone and glucose. It may also be derived from the fermentation of soybeans.
This ingredient an antioxidant, meaning it helps protect your skin cells against damage.
Studies show this ingredient helps improve hyperpigmentation and fade discoloration.
Alpha-Arbutin may be used with other ingredients that help with hyperpigmentation. These ingredients include retinol, Vitamin C, niacinamide, and tranexamic acid.
Learn more about Alpha-ArbutinSclerotium Gum is a polysaccharide gum made by the fungus, Sclerotium rolfssii. It is similar to xanthan gum.
In cosmetics, Sclerotium Gum is used to thicken the texture and to help stabilize other ingredients.
As an emulsifier, Sclerotium Gum helps prevent ingredients from separating, such as water and oil.
Learn more about Sclerotium GumIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
COLLISTAR Milano Attivi Puri Vitamin C + Alpha-Arbutin 10 ingredients
Undefined Beauty R&R Day Serum 19 ingredients
Reviews
Here's what our community thinks
COLLISTAR Milano Attivi Puri Vitamin C + Alpha-Arbutin 10 ingredients
Undefined Beauty R&R Day Serum 19 ingredients
Dropper is hell to screw on but so far I’ve noticed my acne is less inflamed and my skin’s more hydrated & glowy. Good product
