Earth Harbor Marina Biome Brightening Concentrate

Important note on oil-based serums

Oil-based serums are designed to nourish the skin while helping support the skin barrier. Unlike water-based serums that rely primarily on humectants, oil-based formulas use plant oils and emollients that help soften the skin and seal in moisture.

When I evaluate oil-based concentrates, I look for formulas that prioritize high-quality plant oils and simple ingredient lists. I also pay attention to whether the formula avoids undisclosed fragrance blends, PEG compounds, petroleum-derived fillers, and overly aggressive preservative systems.

Because these products are concentrated, only a few drops are usually needed to support hydration and help maintain healthy-looking skin.

What I avoid in serums

When I evaluate serums, I try to avoid ingredients that can disrupt the skin barrier or contribute to unnecessary chemical exposure. These often include:

• undisclosed fragrance or parfum
• PEG compounds or ethoxylated ingredients
• petroleum-derived fillers such as mineral oil or dimethicone
• harsh preservative systems

I also look closely at ingredient sourcing and formulation simplicity, especially for products used daily.

Product description

Earth Harbor Marina Biome Brightening Ampoule is a lightweight oil-based serum designed to support skin balance and improve the appearance of uneven tone.

The formula uses a blend of plant oils, including green tea seed oil, watermelon seed oil, blueberry seed oil, rosehip seed oil, and jojoba oil, to help nourish and soften the skin.

Squalane supports hydration and improves the skin's ability to retain moisture, while caprylic/capric triglycerides create a lightweight texture that absorbs easily.

Spirulina extract provides antioxidant support, while blue tansy oil and jasmine extract contribute calming botanical compounds that may help promote a more balanced skin appearance.

The result is a facial oil that helps maintain hydration while supporting brighter, more even-looking skin.

Full ingredient list

Camellia Oleifera (Green Tea) Seed Oil*, Squalane (Olive-Derived)°, Citrullus Lanatus (Watermelon) Oil°, Vaccinium Corymbosum (Blueberry) Seed Oil°, Rosa Canina (Rosehip) Seed Oil*, Simmondsia Chinensis (Jojoba) Oil°, Caprylic/Capric Triglycerides (Coconut-Derived)°, Spirulina Platensis (Spirulina) Extract*, Helianthus Annuus (Sunflower) Seed Oil*, Tanacetum Annuum (Blue Tansy) Flower Oil°, Jasminum Sambac (Jasmine) Flower Extract°, Tocopherol (Sunflower Vitamin E)*

What I like

I like that this formula focuses on nutrient-dense plant oils and antioxidants rather than fillers or unnecessary additives.

The blend of botanical oils provides lightweight moisture while helping support the skin barrier.

It can also be used in small amounts on its own or layered with moisturizer, depending on how much hydration your skin needs.

The EWG analyzer rating for this formula is around 1, indicating a relatively low hazard profile based on the available ingredient data.

Things to keep in mind

As with many botanical formulas, essential oils such as blue tansy and jasmine are included. These ingredients can provide aromatic and soothing properties, but may not work for everyone with extremely sensitive skin.

Essential oils can carry trace contaminants depending on their sourcing and processing, which is why I prioritize brands that use third-party testing and adhere to ingredient quality standards to help minimize contaminants.