Summer Glow With Undaria Algae Skincare

Written by OSEA Staff | Published July 9, 2025

Nothing says summer like naturally glowing skin that’s been kissed by the sun. Whether you’re jetting off to the Greek Islands or mastering the art of the staycation, the key to breezing through the heat lies in a well-curated collection of products that cater to your complexion’s warm-weather needs. Think nutrient-rich hydration, barrier support and lightweight textures that feel as effortless as the season itself—yet still deliver visible results. That’s where our signature ingredient, Undaria seaweed, comes in. 

Rich in amino acids, antioxidants (including fucoxanthin, a carotenoid with free radical-fighting properties), minerals (iodine, magnesium and calcium), and vitamins (A, C and E to help neutralize oxidative stress), this  powerhouse ingredient replenishes the moisture barrier and keeps skin looking healthy. Undaria also contains polysaccharides which help lock in moisture and reduce water loss to minimize dryness. The result? Skin that looks and feels radiant. 

Below, explore our top 10 lightweight Undaria-powered skincare essentials for face and body–designed to keep you glowing all summer long.

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Make It a Double (Cleanse)

Warmer weather often leads to more oil production, so using a pre-cleanser followed by a hard-working gel cleanser is key for removing impurities and cleansing pores. 

The ideal first step in any double cleanse routine is using an oil-based cleanser. Apply our bi-phase Ocean Wave Cleanser to dry skin to effortlessly lift away waterproof makeup, excess sebum and daily grime—all without drying out your skin. Formulated with Undaria seaweed and camelina oil to moisturize and condition, this makeup remover and cleansing oil leaves skin balanced, nourished and incredibly soft.

Next, use a water-based cleanser for a more thorough, targeted cleanse. The second step in your double cleanse is also a chance to massage the skin and allow your cleanser to really get to work. Our pH-balanced Ocean Cleanser removes surface impurities and excess oils while gently exfoliating with lactic acid to visibly refine pores. Enriched with nutrient-rich Undaria seaweed, it mineralizes skin and leaves a clear-looking, radiant complexion that’s perfectly prepped for the products to come.

 

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Hydrating Toner & Eye Serum

Next up: tone and treat. Our Sea Minerals Mist is like a glass of water for the skin. It’s loaded with minerals from Undaria seaweed, plus ultra-hydrating glycerin and aloe vera juice to replenish the moisture barrier. It deposits all of this goodness onto your skin, leaving it with a dewy and healthy-looking glow. When you’re hot and sweaty, a hydrating mist can be a lifesaver. We keep a bottle on our desks for mid-day refreshes, and the travel-size version is perfect on the go.

Think of our Ocean Eyes® Serum as a shot of espresso for your under-eyes. Seconds after you roll it on, this Allure Best of Beauty award winner helps wake up your entire face. Powered by Undaria seaweed, hyaluronic acid, caffeine, and a biomimetic tetrapeptide, it visibly brightens, firms, depuffs, smooths and hydrates. Plus, the cooling rollerball feels amazing on contact. We love that it’s completely scent- and fragrance-free, so you can roll it on with abandon. Stash one in your carry-on this summer and swipe mid-flight to instantly refresh your eyes.

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Opt for a Lightweight Moisturizer

All winter, sealing in hydration was the name of the game. But now that summer’s here, it’s time to swap your rich creams for something lighter and more breathable. Look for humectants like hyaluronic acid, glycerin and aloe, which attract and retain moisture without weighing skin down.

Enter Seabiotic® Water Cream. Our light-as-air gel moisturizer is clinically shown to instantly boost hydration by 173% and keep skin moisturized for 72+ hours.* It’s overflowing with nourishing ingredients like Undaria seaweed to replenish the moisture barrier, hyaluronic acid to deeply hydrate and squalane for lightweight, yet long-lasting moisture. We love that this cream is practically weightless on skin, layers easily (under makeup, sunscreen and face oil), and leaves skin silky-smooth, with a satiny finish.

*Based on an independent third-party study. 

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Glow All Day 

Long, sunny days call for skin that glows from within. Once your face is hydrated, the final step is all about sealing in moisture and dialing up the glow. Our Dayglow Face Oil® instantly illuminates for a dewy, glaze-y finish. No makeup, no shimmer, just summer skin at its best. Use it all over, or simply dab on cheekbones and the bridge of your nose for an ethereal sheen. Formulated with mineral-rich Undaria seaweed, organic cold-pressed Moroccan argan oil and grapeseed oil, it supports a healthy moisture barrier for all skin types. It smells—in a subtle and calming way—like chamomile flowers harvested at the peak of freshness. Pat it on in the morning and glow all day.

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Cleanse & Exfoliate Your Body

Get that sun-drenched, vacation-skin feeling without leaving your shower, courtesy of our Undaria Algae™ Body Wash. This nourishing cleanser uses a plant-based surfactant blend to gently cleanse without stripping. Made with Undaria seaweed—rich in amino acids, antioxidants, and nutrients—it mineralizes the skin, leaving it totally refreshed. The bright, citrusy scent feels like summer in a bottle, and the silky gel texture creates a rich lather that rinses away dirt, sweat, and oil.

The secret to achieving the softest, smoothest skin all over? A gentle body exfoliator. During the summer, dead skin cells can build up thanks to sunscreen, sweat and oil. An easy fix: our Undaria Cleansing Body Polish. If you’re not on the Undaria train yet, this one will get you there. The innovative gel-to-milk formula uses both physical and AHA exfoliation to smooth rough texture and reveal skin that feels fresh, soft and summer-ready (though we’ll be using it year-round).

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The Undaria Body Hydrators

After a long day at the beach or a dip in the ocean (our favorite kind of summer day), your body craves hydration. That’s where our lightweight Undaria body moisturizers come in. 

For a featherweight, radiant finish, reach for Undaria Algae™ Body Lotion. This fast-absorbing formula, packed with hyaluronic acid, Undaria seaweed and peptide, sinks in effortlessly, leaving nothing behind but petal-smooth skin. Don’t be fooled by the essence-like texture—this powerhouse moisturizer is clinically shown to immediately increase hydration and visibly firm the skin in just four hours.*

If you’re looking for a gleamy, dreamy and ultra-dewy finish, our bestselling Undaria Algae™ Body Oil delivers. Undaria seaweed combines with seven nourishing botanical oils for silky-soft, glowing skin. Our skin-softening formula is clinically shown to improve elasticity and moisturization after just one use.* If that’s not enough, the oil (just like our Body Lotion and Polish) is beloved for its signature, natural grapefruit scent—reminiscent of a summer vacation. Layer it over Undaria Algae™ Body Lotion, or use on its own, smoothing over legs, shoulders—anywhere you crave a little luminosity.

*Based on an independent third-party study. 

Ready to dive into Undaria seaweed? Explore our complete collection here. 

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