I’m picky about what I put on my skin, so I always look at the brand and the ingredient list first. OSEA is a family-owned skincare and body care brand from Malibu, and seaweed is at the heart of the line.

The name stands for Ocean, Sun, Earth and Atmosphere, and they’ve been making clean beauty since 1996. Their Undaria Algae Body Oil is the product most people know them for, so that’s where this post starts.

👉 Use code SHOPELIZABETH for 10% off at the OSEA website.

This post has affiliate links, and I earn a commission if you use my code or links.

What Makes OSEA Different

• Seaweed in almost everything. Undaria seaweed shows up across the body care line, and OSEA’s face products are built around seaweed, too.
• Vegan and cruelty-free. OSEA is certified Vegan through PETA’s Beauty Without Bunnies program and is Leaping Bunny certified.
• Mother and daughter run. Founder Jenefer Palmer started OSEA in 1996, and today she runs it with her daughter, Melissa.
• Made in California. OSEA makes its products in California from ingredients sourced around the world.

Undaria Algae Body Oil: The Cult Favorite

The Undaria Algae Body Oil is OSEA’s best-known product. OSEA makes it by soaking hand-harvested Undaria seaweed in barrels of oils so the oil takes on the seaweed’s vitamins and minerals. The brand says it’s clinically shown to instantly improve the look of skin elasticity and deliver deep moisture, and describes it as rich but never greasy.

A few things to know before you buy:

• The original is an aromatherapy oil with a scent. If you’d rather skip fragrance, there’s a fragrance-free version that’s hypoallergenic, dermatologist tested and has the National Eczema Association Seal of Acceptance.
• The color can vary from bottle to bottle, and you may see seaweed sediment at the bottom. OSEA says both are normal and come from the way it’s made.
• It comes in 1-ounce ($16), 5-ounce ($52) and 9.6-ounce ($84) bottles, so you can start small. The fragrance-free version is $52 for 5 ounces.

If you love body oils, I cover more options in my guide to natural oils for healthy skin.

See the Undaria Algae Body Oil here >> Use code SHOPELIZABETH at checkout for 10% off.

OSEA Serums

OSEA makes a few face serums, and these two are good places to start. Both are $88 for 1 ounce.

Hyaluronic Sea Serum

Hyaluronic Sea Serum is a fast-absorbing hydrating serum with two molecular weights of hyaluronic acid, seaweed and snow mushroom. OSEA says it’s clinically proven to smooth the look of fine lines and give skin a lifted, firmer look, and it’s clinically and dermatologist tested.

It’s made to keep skin hydrated and dewy any time of day, so it works in a morning or evening routine. There’s also a $20 travel size if you want to try it first.

See the Hyaluronic Sea Serum here >> Use code SHOPELIZABETH at checkout for 10% off.

Dream Night Serum

Dream Night Serum is a nighttime serum with algae-derived bio-retinol and two firming peptides. OSEA designed it to mimic the effects of retinol without the irritation, and says it works while you sleep to visibly reduce crow’s feet, fine lines and deeper wrinkles.

It’s worth a look if regular retinol is too much for your skin. A 0.17-ounce mini is $20.

See the Dream Night Serum here >> Use code SHOPELIZABETH at checkout for 10% off.

Quick Answers About OSEA

Is there an OSEA discount code?

Yes. Use code SHOPELIZABETH for 10% off at oseamalibu.com.

Why isn’t my OSEA code working?

Make sure it’s typed exactly as SHOPELIZABETH, with no spaces. Most checkouts take one code per order, so if you’ve already added another promo code, remove it first. OSEA’s own 10% newsletter offer is for first orders only and doesn’t apply to subscriptions.

Is OSEA worth it?

It costs more than a drugstore body oil, and you’re paying for a seaweed-infused formula from a small family brand. If you want to test it first, the 1-ounce body oil is $16.

Does OSEA offer free shipping and returns?

US orders of $50 or more ship free with standard shipping. You can return items within 30 days of your ship date for a refund or an OSEA gift card, and a $5 return label fee comes out of refunds.

Is OSEA vegan?

Yes. OSEA is certified Vegan through PETA’s Beauty Without Bunnies program, and it’s Leaping Bunny certified, so it isn’t tested on animals.

OSEA Discount Code

👉 Use code SHOPELIZABETH for 10% off at OSEA Malibu. It’s a good excuse to finally try the body oil everyone talks about, or to add a serum to your routine.

If you only buy one thing, start with the 1-ounce body oil. It’s an easy, low-cost way to see if OSEA is for you.