In today’s post, I’m sharing my OSEA Marine Screen Sunscreen review.
Launching just in time for summer, OSEA is finally giving the people what they want: a mineral sunscreen. OSEA is one of my favorite clean skincare brands, and I have been patiently waiting for years for them to come out with a mineral SPF that I can wear daily.
When the team at OSEA reached out about this launch, I couldn’t reply fast enough. Sun protection is super important to me, and I just knew they were going to knock this SPF out of the park.
OSEA’s Marine Screen is the brand’s first-ever mineral sunscreen and their most requested product ever, a fact I found not surprising in the slightest. As an avid OSEA fan and SPF connoisseur, I was SO excited to put this product to the test.
In today’s OSEA Marine Screen Mineral Sunscreen review, I’m going to walk through this product’s ingredient list and the benefits of using a daily SPF. Then, I’ll cover all of the product details and how I recommend using it.
OSEA has generously provided a new discount code for my readers to use this year! Use code RUTH2026 for 10% off at checkout.
My OSEA Marine Screen SPF 50 Review
I have tried a LOT of mineral sunscreens over the years. I have melanoma in my family and tend to burn really easily, so sun exposure is not really something I mess around with–and neither should you!
Sun damage is an instant ager. Even if you are someone who tans easily and aren’t necessarily worried about sunburns, using sunscreen regularly is the single most impactful thing you can do to take care of your skin. Applying SPF every single day, even on days spent mostly inside, is crucial.
As you might imagine, I take SPF very seriously–I never, ever miss a day–and try to stick to mineral formulas whenever I can.
TLDR: Chemical vs Mineral sunscreens
Chemical sunscreens that include ingredients like oxybenzone, octinoxate, homosalate, and octocrylene are known to have endocrine-disrupting effects and are bad for the environment, particularly marine ecosystems.
Mineral formulas, otherwise known as physical sunscreens, sit on top of the skin and act as a protectant without any of the harmful effects associated with chemical sunscreens.
OSEA’s Marine Screen Mineral SPF is powered by non-nano zinc oxide which acts as a clean mineral shield, protecting skin from both UVA and UVB rays.
OSEA Marine Screen SPF 50 Ingredients + Benefits
Non-nano zinc oxide:
A clean mineral shield that protects skin from UVA/UVB rays.
Undaria seaweed:
Nourishes and mineralizes skin with antioxidants and amino acids.
Hyaluronic acid:
Boosts hydration and locks in moisture for smoother, more youthful skin.
It’s worth noting that OSEA’s Marine Screen Sunscreen is free of parabens, phthalates, silicones, and nanoparticles.
My OSEA Marine Screen Sunscreen review after two weeks of daily use
I have been using OSEA’s Marine Screen Mineral SPF 50 for a couple of weeks now, and I have been SO happy with it.
The formula is INCREDIBLE. It’s lightweight, easy to rub in, and made with clean ingredients that I feel good about putting on my skin every single day. This SPF leaves a hydrated, dewy finish without feeling greasy or heavy on the skin.
I also love that the formula is not harmful to the environment (I thought the “Marine Screen” name was such a cute nod to this!).
Consistency
Generally, I have found most mineral sunscreens fall into one of two camps: they are either so thin to the point of watery OR ultra thick and heavy, leaving a greasy finish that drives me nuts throughout the day.
The OSEA Marine Screen’s consistency is what makes it stand apart from other mineral sunscreens I’ve tried. It’s thin and blendable but not watery like a lot of SPFs. The finish is lightweight on my skin, nourishing and hydrating but NOT heavy or cakey.
OSEA’s Marine Screen sunscreen is made with an olive-derived natural silicone that gives it this blendable consistency. It really just melts into the skin which is exactly what you want.
Application
Like all mineral sunscreens, the Marine Screen SPF can leave a really subtle white cast. This is just the nature of mineral SPF and something I’ve come to accept and have learned to work around.
I do have a few tips for this. The most important thing is that your skin is properly hydrated and moisturized prior to applying your sunscreen. Then, warm the product up into your hands and press it gently into your skin. A little does go a long way. I’ve found a pea-sized amount is enough to cover my face and neck, and I usually double that to cover my chest and shoulders too.
You should apply the SPF every morning, after your skincare and 15 minutes prior to going out in the sun. If you plan to be out in the sun all day, plan to reapply every few hours.
Layering with makeup
I’ve been really pleased by how well this SPF layers under makeup. I have another very expensive SPF that I have been trying to use up this spring that just does not play nice with my makeup and pills throughout the day. I’ve had no issues with this whatsoever with OSEA’s mineral SPF which is so nice. I recommend waiting just 1-2 minutes after applying before moving on to foundation.
Packaging
OSEA’s Marine Screen Sunscreen comes in an upside down tube with a twist-on top. The tube is sleek and easy to use. I love that the product sits upside down because then I know I’m not wasting a drop.
Price
OSEA’s Marine Screen Sunscreen costs $42 for a 1.69 oz bottle. This price is pretty standard for the amount compared to many current bestselling mineral SPF products on the market.
How to use OSEA’s Marine Screen SPF
I apply OSEA’s Marine Screen Sunscreen as the very last step in my morning skincare routine (usually an essence, hydrating serum, and a moisturizer with bronzing drops!).
I let my moisturizer soak in for a couple of minuyes while I make the bed before I apply my SPF. Then, I apply the SPF to my face, neck, chest, and tops of my shoulders. If that seems like overkill, take it up with my dermatologist!
I’ll wait another minute or two to start my makeup if I’m wearing any that day.
The most important thing with SPF is consistency. It’s a habit well worth practicing and the best way to get the most “bang for your buck” when it comes to skincare.
Thank you to OSEA for sponsoring today’s review! As always, all opinions are my own. I may earn a small commission on purchases made through links on my website, at no cost to you, the reader.
OSEA has generously provided a new discount code for my readers to use this year! Use code RUTH2026 for 10% off at checkout.
A few current OSEA faves:
Check out my full OSEA brand review and list of favorites here!
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