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Written by OSEA Staff | Published November 20, 2020
Since 1996, we’ve been harnessing the power of pure, potent seaweed to create clean, clinically tested skincare for results you can sea. But what makes seaweed so powerful for the skin? Here, we’re diving into the benefits of seaweed in skincare, the varieties we use, and which seaweed-infused formulas are right for you.
The Benefits of Seaweed Skincare
Seaweed, the signature ingredient in our products, is an abundant, sustainable resource packed with potent nutrients. We formulate with seaweed—marine plants and algae—because it’s one of nature’s most incredible superfoods. With thousands of species found in the ocean, seaweed is rich in vitamins, minerals, amino acids, antioxidants and essential fatty acids. But not all seaweed is created equal. We formulate with seaweed that delivers unique benefits to the skin, from replenishing the moisture barrier to visibly firming and brightening.
Our Seaweed Source
We source seaweed from around the world based on its high mineral content and combine it with plant-based ingredients at clinically tested levels.
The Best Seaweed Skincare
Our mineral-rich seaweed each has its own unique science-backed benefits. Keep reading to find the best fit for you.
Undaria Seaweed
Rich in amino acids, antioxidants, minerals, nutrients and vitamins, Undaria seaweed (Undaria pinnatifida algae), is a species of kelp that replenishes the moisture barrier and keeps skin looking healthy.
One of the most effective ways to experience its benefits is through our number one bestselling Undaria Algae™ Body Oil. To create it, we soak hand-harvested Undaria in barrels of botanical oils, allowing its nutrients to infuse slowly over time. This artisanal process gives the oil its signature silky, non-greasy texture. The color can range from golden to emerald green depending on the seaweed harvest—and it’s perfectly normal to see a bit of seaweed sediment in the bottle.
Our nourishing body oil combines seven active botanical oils—including passion fruit, acai, and babassu—with mineral-rich Undaria seaweed for silky-soft, glowing skin all over. White lupin flower promotes more youthful-looking skin by visibly contouring, firming, and improving elasticity for results you can see and feel. In a third-party clinical study, 100% of participants showed an improvement in skin elasticity and moisturization after just 10 minutes.* And the iconic, uplifting citrus scent? Like a vacation, bottled.
*Based on an independent third-party clinical study after 1 use.
For Your Face
The benefits of Undaria go beyond the body. For facial skincare, we’ve harnessed Undaria’s mineralizing powers in our Ocean Wave Cleanser—a bi-phase cleansing oil and makeup remover, and one of our favorite ways to wash away the day. This lightweight, nourishing cleanser effortlessly dissolves makeup (even the waterproof kind), impurities and excess oil while balancing and softening skin. The formula also includes camelina oil, which is packed with omega-3 fatty acids to moisturize and condition. While most oil cleansers are unscented, ours has subtle notes of bergamot and jasmine, making your cleansing ritual feel even more indulgent. The best part? There’s no oily after-feel, and no tightness—just soft, hydrated skin that feels as good as it looks.
Red Seaweed
Our red seaweed (or red algae) mineralizes and moisturizes to promote smoother, more supple, healthier-looking skin. It’s packed with bio-protective oligosaccharides and essential minerals, in addition to containing amino acids, antioxidants and other nutrients.
Get started with red seaweed skincare by incorporating our bestselling and award-winning Ocean Eyes® Age-Defying Serum into your eye care routine. A potent blend of red algae and Undaria seaweed visibly brightens skin under the eyes and reduces the appearance of crow’s feet and undereye bags. This red seaweed-powered eye serum helps you appear bright-eyed and rested (although you may still need your double shot of espresso). The cooling rollerball applicator awakens the entire eye area and feels fantastic on skin. We love that it’s fragrance-free and gentle on the eyes, so you can roll it on with abandon. And the results are impressive. After two weeks of use, 97% of people agreed that skin was visibly firmer.* After four weeks, 97% agreed that the eye area looked brighter, less fatigued and dark circles were visibly reduced.* It’s the kind of transformation you can see—and feel—every time you roll it on.
*Based on an independent third-party consumer-perception study conducted over 4 weeks on 31 women ages 37-65.
For Your Body
Sourced from the pristine waters of Patagonia, our red seaweed–infused Salts of the Earth Body Scrub polishes away every trace of roughness for silky-smooth skin all over. This bestselling moisturizing body polish blends mineral salts from around the world with a creamy base of shea butter and nutrient-rich Gigartina seaweed (a type of red algae) to gently exfoliate. It smells incredibly relaxing—courtesy of the lavender oil—has a velvety texture on skin, and leaves your whole body feeling soft, smooth, and brand new.
Japanese Miru Seaweed
If you’re looking for deep hydration, look no further. Our Japanese Miru seaweed (also known as Codium fragile) helps replenish and balance the skin’s natural moisture levels for healthy-looking, hydrated skin. It’s no surprise that this silky seaweed is the star ingredient in our beloved hyaluronic acid serums for face and body.
Our Hyaluronic Sea Serum is a bestseller for a reason: It works like a dream. This fast-absorbing treatment is clinically tested to improve skin hydration, skin elasticity and smooth the appearance of fine lines and wrinkles. In fact, after just one use, 100% of participants showed an improvement in fine lines and wrinkles, while 97% of participants showed an increase in hydration!* So how exactly does this magic work? Two molecular weights of hyaluronic acid, Japanese Miru seaweed, and snow mushroom, work together to optimize moisture levels in the skin, keeping it hydrated all day. Also nice: The silky gel texture is oil free and leaves skin looking dewy and fresh.
*Based on an independent, third-party clinical study conducted on 31 women.
For Your Body
For the other ~91% of your skin, there’s our Japanese Miru seaweed–infused (and award-winning) Hyaluronic Body Serum. It delivers all the hydrating benefits of a facial serum, but is formulated specifically for the skin on your body. This lightweight, fast-absorbing serum is clinically tested to boost hydration and improve the skin’s natural moisture barrier after just one use,* revealing visibly healthy, smooth skin all over. Packed with five molecular weights of hyaluronic acid, aloe, vegan peptides, and nutrient-dense Japanese Miru seaweed, this full-body treatment delivers 24 hours of multi-surface hydration.* Even better, it’s dermatologist-tested, works for every skin type (including sensitive), and is completely fragrance-free—so it won’t compete with your perfume. We’re so proud that it’s been awarded the Seal of Acceptance™ by the National Eczema Association. Use it on its own, or layer under your favorite body moisturizer to maximize results.
*Based on an independent third-party clinical study after 1 use.
Brown Seaweed
Our brown seaweed mineralizes and moisturizes for healthier-looking skin. Naturally rich in polysaccharides, antioxidants, macro elements, and trace elements, brown seaweed (algae) is one of our most versatile ingredients. Its benefits range from improving skin luminosity and hydration to visibly firming, boosting elasticity, and reducing the appearance of oily shine. In short, brown seaweed has something to offer for every skin type and concern.
For anti-aging benefits, start with our bestselling Anti-Aging Body Balm, featuring Alaria esculenta, a brown seaweed that helps improve the appearance of skin elasticity and visibly firms skin. This silky, youth-restoring elixir sinks in, transforming dry skin to supple and radiant. In a third-party consumer study, 84% of participants agreed their skin looked firmer after two weeks.* After four weeks, 81% agreed their skin felt lifted, tighter and more toned.* Red seaweed, coconut oil, passion fruit, omega fatty acids, sea minerals, and antioxidants are all packed into this softening, smoothing liquid body balm. Inhale the addictive jasmine-and-geranium floral scent, and you’ll wonder how you ever lived without it.
*Based on a third-party consumer perception study conducted over 4 weeks on 32 women ages 37-65.
For Your Face
If you have oily, combination, or blemish-prone skin, you’ll love our brown seaweed–infused Ocean Cleansing Mudd. This invigorating cleanser deep-cleans like a mask but takes a fraction of the time—and won’t leave your skin feeling dry or stripped. Formulated with mineral-rich bladderwrack algae (Fucus vesiculosus), peppermint oil and glacial oceanic clay, it unclogs pores, removes excess oil, and sweeps away impurities, leaving skin visibly clear and totally refreshed. It’s also ideal for those living in the city, as it’s powerful enough to remove the urban debris that can clog pores.
Results You Can Sea®
Get ready to sea the difference for yourself with our complete seaweed skincare collection for your smoothest, most radiant skin yet. Still not sure which seaweed-infused product is right for you? Take our Skin Quiz to find your perfect ritual. Your skin will thank you.
