Isntree Hyaluronic Acid Airy Sun Stick SPF50+ PA++++ Versus Round Lab Birch Moisturizing Sun Stick SPF 50+ PA++++
Updated on May 31, 2024
Overview
What they are
These products are both sunscreens. They have a total of 22 ingredients in common
Cool Features
They both contain exfoliants, hyaluronic acid, niacinamide and SPF
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening 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, parabens or sulfates
What's Inside
They both contain oils and silicones
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
Isntree Hyaluronic Acid Airy Sun Stick SPF50+ PA++++ 49 ingredients
Round Lab Birch Moisturizing Sun Stick SPF 50+ PA++++ 51 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Isntree Hyaluronic Acid Airy Sun Stick SPF50+ PA++++ 49 ingredients
Round Lab Birch Moisturizing Sun Stick SPF 50+ PA++++ 51 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
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 WaterWe don't have a description for Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer yet.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
- It has mild preservative properties.
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Niacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
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.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about NiacinamideDiethylamino Hydroxybenzoyl Hexyl Benzoate (DHHB) is a chemical UV-A absorber. It is formulated for high UVA protection (320-400 nm).
DHHB is well-liked for:
DHHB has been approved by the EU, Japan, Taiwan, and South America for use up to 10%. Unfortunately, it has not been approved for use in the US or Canada due to slow regulatory processes.
This ingredient is soluble in oils, fats, and lipids.
Learn more about Diethylamino Hydroxybenzoyl Hexyl BenzoateVinyldimethicone is a type of silicone.
You might know this ingredient as Tinosorb S or Bemotrizinol. It is a UV filter that covers both UVA and UVB rays.
This ingredient has two peak UV absorption peaks ( 310 and 340 nm) and is able to absorb both UV-A and UV-B rays. This ingredient works by preventing UV rays from reaching and damaging your skin.
On top of that - it is highly photostable and helps prevent the photodegration of other sunscreen ingredients such as avobenzone.
Tinosorb S is allowed in the EU, Australia, and Asia. It is close to being approved by the FDA and we'll hopefully get this ingredient in the U.S. by late 2025.
Fun fact: Tinosorb S is the most effective UV absorber at maximum concentration (measured by SPF) permitted in the EU.
This ingredient is oil-soluble, so your oil-cleansers will take this right off at night.
Learn more about Bis-Ethylhexyloxyphenol Methoxyphenyl TriazineOzokerite is a naturally occuring mineral wax. In cosmetics, ozokerite is used as a texture enhancer.
Ceresin wax is derived from this ingredient.
The melting point of ozokerite is 58-100 C.
Ozokerite is found all over the world including Scotland, the US, and India.
Learn more about OzokeritePolyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate isn't fungal acne safe.
Glycerin 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 GlycerinLaminaria Japonica Extract comes from a kelp more commonly known as 'sweet kelp'. It is commonly eaten in Japan, Korea, and China.
Sweet kelp is a humectant and helps hydrate your skin. Humectants draw moisture from the air to your skin.
Studies show Laminaria Japonica has antioxidant compounds. Antioxidants may help with anti-aging. Kelp also contains magnesium and zinc, making it great for calming inflammation and redness.
Learn more about Laminaria Japonica ExtractThis tree is also known as the David Elm. It contains the ingredient bakuchiol.
Other great compounds found in this ingredient include galactose, glucose, and phenolics. The sugar content gives it great skin hydrating properties. Phenolics are potent antioxidants commonly found in fruits and veggies.
A 2020 study found the phenolics of this root to have an anti-inflammatory effect.
Fun fact: This ingredient is used in traditional Asian medicine.
Learn more about Ulmus Davidiana Root ExtractAloe Barbadensis Leaf Extract is an extract of the leaves of the aloe, Aloe barbadensis, Liliaceae.
You may know Aloe to be a good sunburn reliever and inflammation reducer. This is because it contains many components that are known to help reduce irritation and itchiness. These include vitamins, amino acids, polysaccharides, and more. The high water content of aloe also helps give a cooling effect.
Aloe contains the antioxidants Vitamins A, C, and E. These vitamins neutralize free radicals. Free-radicals are molecules that may damage your skin cells, such as pollution.
The aloe plant is naturally abundant in polysaccharides, a carbohydrate made of sugar molecules. Polysaccharides help hydrate your skin by mimicking your skin's natural carbohydrates.
As it is easily absorbed by the skin, aloe is a great moisturizer. It is both a humectant and emollient. Emollients help trap moisture in your skin, keeping your skin soft. Humectants draw water from the air to your skin.
Other components of aloe include sugars such as monosaccharides and polysaccharides, folic acid, choline, many common minerals such as calcium, fatty acids, amino acids, and Vitamin B12.
Aloe does not protect against UV rays, despite it soothing sunburns.
There are over 420 species of aloe but Aloe Barbadensis is the most commonly used for topical products.
Learn more about Aloe Barbadensis Leaf ExtractViola Mandshurica Flower Extract is an antioxidant.
Dioscorea Japonica Root Extract comes from the Asian Mountain Yam. It contains antioxidant and anti-inflammatory properties.
Antioxidants help neutralize free-radical molecules. These molecules may damage your skin cells and DNA.
Glyceryl Caprylate comes from glycerin and caprylic acid, a fatty acid from coconut. It has emollient and emulsifier properties.
As an emollient, it helps hydrate your skin. Emollients work by creating a barrier on your skin to trap moisture in, helping to keep your skin soft and smooth.
On the other hand, emulsifiers prevent ingredients (such as oil and water) from separating.
Learn more about Glyceryl CaprylateSodium 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 HyaluronateAdenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.
Adenosine has many benefits when used. These benefits include hydrating the skin, smoothing skin, and reducing wrinkles. Once applied, adenosine increases collagen production. It also helps with improving firmness and tissue repair.
Studies have found adenosine may also help with wound healing.
In skincare products, Adenosine is usually derived from yeast.
Learn more about AdenosineHyaluronic acid is naturally found in healthy skin. It is a humectant, meaning it draws moisture to your skin.
This ingredient helps hydrate, soothe, and protect the skin.
What makes hyaluronic acid so hydrating? It has the capacity to bind or hold large amounts of water.
Fun fact: It is already naturally found in our bodies, such as the fluids of our eyes and our joints.
Studies find this ingredient to have anti-inflammatory and anti-microbial properties. This can help speed up wound-healing.
Hyaluronic acid can be irritating if the molecule has a low-molecular weight, or if the molecules are small.
One study found low-molecular weight hyaluronic acid to be pro-inflammatory, meaning some people may experience irritation. This is because our bodies use hyaluronic acid in the wound-healing process to signal to our bodies, via irritation, that something needs healing.
The same study found high-molecular weight hyaluronic acid to be anti-inflammatory.
These are some other common types of Hyaluronic Acid:
Learn more about Hyaluronic AcidCaprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolEthylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.
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
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Isntree Hyaluronic Acid Airy Sun Stick SPF50+ PA++++ 49 ingredients
Round Lab Birch Moisturizing Sun Stick SPF 50+ PA++++ 51 ingredients


Reviews
Here's what our community thinks
Isntree Hyaluronic Acid Airy Sun Stick SPF50+ PA++++ 49 ingredients
Broke me out :(
I heard a lot of positive feedback about this product, and I was excited to try it out but sadly, like all other sunsticks, it broke me out terribly :( I do love to use it on my hands, tattoos, and shoulders while cycling or walking out in the sun all day.
Round Lab Birch Moisturizing Sun Stick SPF 50+ PA++++ 51 ingredients
Love, love, LOVE this sunscreen stick. It glides on smooth, doesn't feel oily, goes on invisible, and feels so moisturizing. I will say, it does sting open wounds on the skin, I think it's probably the birch, so I'd be careful applying this on open acne marks. But overall, it is the best sunscreen stick I've tried, and is so easy to pop into a purse to carry for easy reapplication of sun Show more
pretty great sun stick. it has a nice texture. however, when reapplying over makeup, it does seem to make your makeup very streaky. if you’re using this out in public for reapplication over makeup, i’d advise bringing a makeup brush so that you can fix the streaks.