Written by OSEA Staff | Published May 30, 2025
If you haven’t yet experienced our bestselling Undaria Algae™ Body Oil, where have you been? This cult-favorite is our most-loved product for good reason. Our silky, fast-absorbing body oil delivers real results, leaving skin visibly firmer, smoother and unbelievably glowing in just minutes. It’s that shiny, gleaming glow that feels like the best parts of summer. Perfect for poolside hangs—and it looks as gorgeous in the bottle as it does on skin.
From its iconic Undaria citrusy scent, to the clinically backed benefits, discover what makes this golden elixir so special – and why even now our formula stands the test of time.
For a full-body glow
The Science of Seaweed
Launched in 2010, our founder Jenefer took everything she’d learned from decades of creating clean, clinically tested face and body care and channeled it into a first-of-its-kind, seaweed-infused body oil that delivers visible results without a greasy after-feel.
As with every OSEA formula, the real magic is down to the quality of the naturally-derived ingredients inside. In this case it’s about a powerhouse seaweed that has been finely milled – ensuring we get all of its skin-loving nutrients. Undaria Algae™ Body Oil is infused with hand-harvested Undaria pinnatifida algae (seaweed), rich in amino acids, antioxidants and nutrients. To create this one-of-a-kind oil, we soak Undaria in barrels of active botanical oils to infuse the vitamins and minerals before it’s bottled to nourish your skin.
Key Ingredients
Our body oil is packed with skin-loving ingredients chosen for their performance, purity, and ability to deliver visible results. Like all of our formulas, Undaria Algae™ Body Oil is vegan-certified by PETA and cruelty-free certified by Leaping Bunny—so you never have to choose between your values and your softest skin.
These are the powerhouse ingredients you’ll find in every single bottle:
Undaria Seaweed
Our signature ingredient. This hand-harvested seaweed replenishes the skin’s moisture barrier and keeps skin looking healthy.
Fun fact:
Undaria seaweed gives our body oil its unique color, which changes with each harvest. It ranges from golden to emerald green, and it’s even normal to see seaweed sediment in the bottle.
White Lupin Flower
The powerful extract in our formulation comes from the seeds of white lupine. It promotes more youthful-looking skin by visibly improving firmness and elasticity.
Botanical Oil Blend
A luxurious blend of seven botanical oils, including passion fruit, acai, babassu and rice bran oils moisturize to replenish dry skin.
The Benefits of Undaria Algae™ Body Oil
Often imitated, never duplicated, our unique body oil transforms dry, crepey skin to silky, soft and incredibly glowing. It’s clinically shown to visibly firm, improve skin elasticity and make skin feel more sculpted and toned all over.
It sinks in instantly, and is non-greasy, so you can slip right into your skinny jeans or crawl into your crisp white sheets, just minutes after application. The signature uplifting Undaria scent—an iconic blend of grapefruit, lime, and cypress with mango-mandarin notes—lingers subtly on the skin and transports you to a tropical escape. We’ve also created a fragrance-free version that’s recognized by the National Eczema Association with the Seal of Acceptance™, just in case you’re sensitive to scents.
Results You Can Sea®
We believe in real results, and we validate our claims with clinical testing. In a third-party clinical study, Undaria Algae™ Body Oil was shown to:
Immediately after 1 use*
- 100% showed a significant improvement in moisturization & skin elasticity
- 98% agreed skin looked visibly smoother
- 96% agreed it relieved dry skin instantly
- 96% agreed it gave skin a healthy, youthful glow
After 2 weeks*
- 100% agreed skin looked firmer and less crepey
- 100% agreed skin felt softer, smoother and more supple
- 96% agreed it made their body feel more sculpted and toned
*Based on a 2-week third-party clinical study of 53 women ages 25-65 (including expert skin grading, instrumental measurements & consumer-perception study)
A Community Favorite Since 2010
It doesn’t just come out on top in clinical trials. Undaria Algae™ Body Oil is also our community’s’ most-ordered product– with one bottle selling every 30 seconds in the US. It’s the obsession-worthy glow, iconic citrusy scent and visible results that bring people back, again and again, and again.
Here are just a few of its nearly 2,500 five-star reviews:
“I absolutely cannot live without this! Literally makes my skin feel like silk.” – Kandice L.
“This golden oil is incredible. It soaks right in and smells like summer.” – Lainey
“Keeps my skin supple. Melts into skin, leaving it moisturized and never greasy.” – Terri H.
“Not greasy and absorbs into my skin and makes it so soft. My fiancé is always commenting on how soft my skin is.” – Andrea
“I’m 66 years young….I absolutely love your body oil! My skin looks and feels NOURISHED AND YOUTHFUL.” – Patricia
How to Use It
Wondering where our body oil fits into your daily skincare routine? There’s no wrong way to use it, but we recommend applying it each day (morning and night) to slightly damp skin after showering. To boost your benefits, exfoliate first in the shower with our Salts of the Earth Body Scrub or Undaria Cleansing Body Polish. Follow with our award-winning Hyaluronic Body Serum, clinically shown to instantly increase hydration by 161%*. Finally, seal in hydration with a generous layer of our body oil.
*Based on an independent third party clinical study after 1 use.
A Body Oil That Does More
Whether you’re looking to nourish dry skin, prep for the perfect summer body glow, or simply upgrade your daily clean body care, Undaria Algae™ Body Oil delivers results you can sea—and feel.
Try it for yourself, and if you’re as addicted as we are, you can glow on repeat (and save 10%) when you start a subscription.
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