Isntree Sun Stick Review

Today I am going to review Isntree Hyaluronic Acid Airy Sun Stick. I got this product for free from the YesStyle Influencer Program in exchange for my HONEST review. I write HONEST in capital letters as I am free to write whatever I feel about the product, good or bad. Actually, I already wrote a negative review about a gifted product (Amazonliss Brazilian Keratin). Now, with no more delay, let’s go through the Isntree Sun Stick review.


About Isntree

Isntree is a cruelty-free K-beauty brand which uses natural ingredients in its formulas to minimise risks of sensitivity and dry skin. The name itself gives an idea about the philosophy of the brand. ISNTREE has a hidden meaning. IS comes from a nature ISland pure, clean and not affected by pollution, N means the use of raw materials from Nature and TREE is simply that, a tree.

Most of the Isntree products are vegan and all of them are cruelty-free.

About the product

Isntree’s bestselling sun stick now comes in new packaging! The formula is fitted with broad-spectrum sun protection of SPF 50+ PA++++ and infused with hyaluronic acid to amp up hydration. Additional ingredients of bamboo water, kelp extract and aloe vera extracts provide soothing touches. The curved design of the sun stick allows easy application, especially while on the go

YesStyle Website

Isntree Sun Stick Features

  • Fitted with broad spectrum SPF50+ PA++++ to block harmful UV rays.
  • Contains bambusa vulgaris water, kelp extract, aloe vera extract and yam root extract to soothe and moisturize skin.
  • Contains hyaluronic acid to replenish the skin’s moisture levels.
  • Glides easily onto the skin.
  • The product’s curved design is tailor-made for hard-to-reach areas


Water, Polyethylene, Propylheptyl Caprylate, C12-15 Alkyl Benzoate, Homosalate, Silica, Ethylhexyl Methoxycinnamate, Neopentyl Glycol Diheptanoate, Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer, Ethylhexyl Salicylate, Butylene Glycol, Synthetic Fluorphlogopite, Niacinamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Vinyl Dimethicone, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Ozokerite, Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate, Pinus Pinaster Bark Extract, Bambusa Vulgaris Water, Mesembryanthemum Crystallinum Extract, Hibiscus Sabdariffa Flower Extract, Ceramide NP, Glycerin, Olea Europaea (Olive) Fruit Oil, Laminaria Japonica Extract, Ulmus Davidiana Root Extract, Aloe Barbadensis Leaf Extract, Viola Mandshurica Flower Extract, Dioscorea Japonica Root Extract, Polyglyceryl-2 Dipolyhydroxystearate, Polyurethane-11, Glyceryl Caprylate, Sorbitan Sesquioleate, Sodium Hyaluronate, Adenosine, Astaxanthin, Pentylene Glycol, Sodium Acetylated Hyaluronate, Sodium Hyaluronate Crosspolymer, Ascorbyl Propyl Hyaluronate, Hydroxypropyltrimonium Hyaluronate, Hydrolyzed Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid, Triethoxycaprylylsilane, Caprylyl Glycol, Ethylhexylglycerin, 1,2-Hexanediol

Isntree Sunstick price and availability

This product is available on the YesStyle website in the UK and costs £29 (you will get a discount if you buy from my link). If you are in the US, you can buy from the Isntree website for $31.

My thoughts about Isntree Sun Stick

About the packaging

The product comes in a minimalist cardboard box in blue and white. The box shows printouts of the product name, some features, how to use it, cautions and other information. All are in English except the information at the back, which is in Korean, I believe.

Inside the box, there is a stick, like a deodorant stick, also in white and blue. The stick has a weird shape. I was expecting it to be round or with an oval shape, but it has a teardrop shape, with one side thinner than the other.

The stick has a round wheel at the bottom to push the product out. It is closed by a press-on cap in translucent white.

It is very handy packaging to carry with you in the bag. As it is a stick, there will not be any mess if the product opens. If you travel, this product is a good option to carry in hand luggage because it is solid. The cap closes really well, there is no risk of opening accidentally. That is good if you carry the product to the beach. It will not end full of sand.


Isntree Sun Stick: the product and application

The product is solid and, as expected, has the same shape as the pack. It is very pale yellow and does not have any scent at all, something positive if you have sensitive skin.

It is very easy to apply. I only need to glide and swipe over my face and neck, covering all the areas. The teardrop shape makes application very easy. The shallow side allows easy application over complicated areas, like the undereye area or the sides of the nose.

The main problem I found when I apply it, is that I don’t know the areas covered by the product. I miss a colour guide (which disappears after a while, obviously), as children’s sunscreens have, to make a more effective application and, maybe, reduce the amount of product applied (sometimes I feel I am overapplying the product).

How does Isntree Sun Stick feel on my skin?

I like how my skin feels after application. I use sunscreen daily because of my dark spot problem, but I hate the feeling most sunscreen leaves on my skin. With this one, I feel……. nothing.

I don’t get a sticky or oily feeling, my skin absorbs the product straightforwardly and I don’t get any sort of white cast. The problem is, as I mentioned, that I think I am using too many products, as I don’t know the areas I already applied.

Because this product contains hyaluronic acid, my skin feels hydrated. Keep in mind that I re-apply any sunscreen every two hours. The hydration this product produced on your skin lasts between applications.

Sometimes I use this product over makeup. Normally I use sunscreen mists or sprays to re-apply sun protection when I am wearing makeup, but I can now also use this sun stick. It does not modify or remove my makeup. My makeup remains intact.


About sun protection property

I can’t say anything about if the product is protecting my skin or not. That applies to any sunscreen. How can I measure or check that? Trust me when I say that I would really like to be able to measure if my skin is protected or not.

I normally trust the products I use as sunscreen (otherwise I don’t use them). This one protects against UVA and UVB, it is SPF 50 and PA++++.

SPF (sun protection factor) measures the ability of a product to block UVB. SPF 50 means that the product blocks 98% of UVB rays and only 2% of UVB will reach your skin. At the moment any product blocks 100% of UVB.

On the other hand, PA is related to the level of protection against UVA. It is related to skin darkening and the time the skin takes to tan. Not all countries use UVA testing, only Japan, the UK, Germany, the US and Australia do.

The PA rating system is complex but, basically, the protection increases with the number of + signs (that goes from one to four + signs). This sun stick is PA ++++, which means that it gives high protection.

Isntree Sun Stick Ingredients

This is a chemical sun protector. All the active ingredients in sunscreen activity produce chemical protection. The main one is homosalate, which is an oil-soluble ingredient which protects against UVB but which is not very stable and should be combined with other ingredients. In this product, homosalate works in combination with octinoxate, ethylhexyl salicylate, Uvinol A Plus and Tinosorb S.

The product contains some moisturising ingredients like hyaluronic acid (as hyaluronic acid and sodium hyaluronate), ceramides and glycerine. It also contains some other beneficial ingredients like niacinamide, olive oil and aloe vera extract.

Isntree Hyaluronic Acid Airy Sun Stick


  • Doesn’t leave an oily or sticky feeling on the skin
  • Doesn’t leave a white cast
  • Hydrates my skin
  • Travel-friendly packaging
  • Easy to apply thanks to its shape
  • Can be used over makeup
  • Gets absorbed quickly


  • Quite expensive
  • Very small size
  • Should include a colour guide for easier application

Do I recommend it?

I fully recommend this product. If you don’t like the feeling most sunscreens leave on the skin you will love this product. It is very easy to apply, even over makeup.

Buy Now with a discount

In summary, this is the first time I use sunscreen on a stick and I am surprised. Sunscreen application is quite torture for me. I hate how they feel on my skin, and with this one, I even like to apply it as my skin feels fresh and I don’t need to wait to apply makeup.

Bear in mind that some of the links in this post are affiliate links and if you go through them to make a purchase I will earn a commission. Keep in mind that I link these companies and their products because of their quality and not because of the commission I receive from your purchases. The decision is yours, and whether or not you decide to buy something is completely up to you.

I love beauty and skincare, try new products, and share my opinion with you. All my knowledge comes from years of experience and reading articles. I have dry skin, Fitzpatrick type IV, warm undertone, and my main concern is hyperpigmentation. Keep in mind that what works for me may not work for you. We are all different and products can have different results on your skin. Want to talk? Email me at