Why Use Seaweed in Summer: The Best Products for Healthy Skin

Emma Caldwell
June 22, 2026

Seaweed algae have decades of history in some of the most effective cosmetic treatments, although in recent years they have enjoyed a boom thanks to the rise of natural-origin ingredients. Traditionally used in beauty rituals of coastal areas in Asia and Europe, they stand out for their extraordinary richness in vitamins, minerals, amino acids and antioxidants. “Precisely because of this they have become one of the most interesting actives to care for the skin during summer, when factors such as the sun, heat, chlorine, or sea salt can disrupt its natural balance,” explain the team from Apivita.

According to them, their popularity is also closely tied to the growing search for multifunctional ingredients. “Seaweeds help to deeply hydrate, but they also provide antioxidant, reparative and soothing benefits.” Therefore, they are an all-in-one capable of strengthening the skin barrier, stimulating collagen production and protecting against free radicals, responsible for a large part of .

We find them increasingly present in serums, moisturizing creams and especially in sunscreens. And when incorporating them into the routine, it is convenient to know that “they double their effect when combined with hydrating ingredients such as hyaluronic acid, glycerin or marine polysaccharides.” In fact, “during the summer they are especially interesting in sunscreens and reparative treatments that contribute to keeping the skin comfortable after sun exposure for a more hydrated, radiant skin and more resistant to .”

The Best Algae-Based Cosmetics


Bee Sun Safe Reparación Antiedad Diaria SPF50 Fluido Facial de Apivita.

Bee Sun Safe Reparación Antiedad Diaria SPF50 Fluido Facial de Apivita. This sunscreen incorporates seaweed extract to deeply hydrate the skin and help prevent the appearance of wrinkles caused by photoaging. In addition, it is combined with niacinamide and patented propolis to improve luminosity, reinforce protection against pollution and keep the skin more even and protected against external aggressions.


Seaweed Night Cream by Mario Badescu.

Seaweed Night Cream by Mario Badescu. This nighttime cream harnesses the potential of marine extracts to intensely nourish the skin while it sleeps. Algae provide minerals and trace elements that help keep the skin hydrated and comfortable, while ingredients such as collagen, elastin and sodium hyaluronate contribute to visually improving skin smoothness and elasticity. The result is skin that is more flexible, radiant and rested upon waking.


Mascarilla Exfoliante de Lierac.

Mascarilla Exfoliante de Lierac. Its formula blends the purifying action of exfoliation with the benefits of seaweed for balancing the skin microbiota. Its marine prebiotic complex is composed of seawater, green algae and brown algae, minerals, amino acids and sugars that help strengthen the skin’s natural ecosystem. Thanks to this combination, the skin looks more radiant, even and healthy after each application.


Sérum Detox de Evoluderm.

Sérum Detox de Evoluderm. Formulated with 98 % natural-origin ingredients, this serum uses antioxidant seaweed extracts to protect the skin from one of the great enemies of modern cutaneous beauty: pollution. These extracts help combat oxidative stress caused by environmental aggressions while hyaluronic acid maintains hydration and improves skin texture. The result is a fresher, more luminous and revitalized complexion.


Marine Algae Hydrating Mask by Ziaja.

Marine Algae Hydrating Mask by Ziaja. Specifically suited for skin over 30 that begins to show early signs of aging, its formula combines seaweed with blue-green lake algae from Lake Klamath, rich in compounds similar to retinol that help improve firmness and strengthen collagen and elastin fibers. It also provides intense hydration, leaving the skin softer, more supple and visibly revitalized.


Aquasource Night Spa by Biotherm.

Aquasource Night Spa by Biotherm. Finally, this nighttime formula takes advantage of Biotherm’s characteristic marine ingredients to replenish hydration levels overnight. Its rich, enveloping texture helps reinforce the skin’s barrier function while combating dehydration and dullness. Thanks to actives from the aquatic environment, the skin wakes up looking fresher, more comfortable and with a much healthier and rested appearance.

Emma Caldwell
Emma Caldwell
I’m Clara Desrosiers, a writer and fashion editor based in Toronto. I founded Backdoor Toronto to explore the intersection of fashion, identity, and culture through honest storytelling. My work is driven by curiosity, community, and a love for the creative pulse that defines this city.