Ocean to Bottle: Our Purity Protocol

July 21, 2025

1. Harvest with Care: From Regenerative Kelp Beds to Clean Transport

Regenerative Cultivation

We partner with coastal cooperatives that practice rotational, seasonal harvesting, allowing kelp forests to rebound naturally.
This method not only protects marine biodiversity but also yields plants at peak nutrient density—rich in polysaccharides, minerals, and antioxidants.

On‑Site Quality Checks

Every kelp harvest is visually inspected for color, texture, and absence of epiphytes (unwanted hitchhikers like barnacles or microalgae).
Samples are sent for immediate microbial screening—ensuring no contamination enters our supply chain.

Cold, Clean Transport

Once harvested, kelp is flash‑chilled on the boat deck to halt enzymatic degradation.
We ship under refrigerated, seawater‑cooled conditions, preserving fragile bioactives until arrival at our processing facility.

Low‑Temperature Infusion

Harvested kelp is gently steeped in purified water at below 25 °C—no heat, no harsh solvents, no loss of vitamins or minerals.
This cold‑infusion captures the full suite of water‑soluble actives: calcium, magnesium, potassium, polysaccharides, polyphenols, and more.

Multi‑Stage Filtration

We employ a series of ultra‑fine membrane filters (down to 0.2 µm) to remove debris, residual salts, and microscopic particulates—resulting in a crystal‑clear marine extract.
The extract is continuously monitored for turbidity, conductivity, and pH, guaranteeing batch‑to‑batch consistency.

Concentration & Stabilization

Using vacuum-assisted low‑heat concentration, we gently reduce water content—boosting the active concentration without denaturing sensitive compounds.
No stabilizers or synthetic preservatives are added; our extract’s natural pH (~5.5) and mineral richness provide inherent stability.

Small‑Batch Production

We cap each production run at 500 L to ensure tight process control and rapid feedback loops.
This microbatch approach lets our chemists track every variable—temperature, mixing speed, filtration time—and intervene immediately if anything deviates.

Analytical Testing

HPLC & Mass Spectrometry confirm the presence and concentration of key marine actives (e.g., fucoidan, alginic acid).
ICP‑MS (Inductively Coupled Plasma Mass Spectrometry) verifies trace‑element profiles (Ca, Mg, K, Zn, Cu) against our established “marine fingerprint.”

Microbial & Endotoxin Screening

Every batch undergoes USP‑compliant microbial challenge tests, ensuring < 10 CFU/g and zero pathogens (E. coli, S. aureus, P. aeruginosa).
Limulus Amebocyte Lysate (LAL) assays confirm endotoxin levels well below cosmetic safety thresholds.

Precision pH Tuning

We fine‑tune all Marèn cleansers to a final pH of 5.3–5.7, matching skin’s natural acid mantle.
This range supports lipid‑barrier integrity and prevents disruption of resident flora.

Skin‑Model Testing

Using reconstructed human epidermis models, we simulate product application to confirm barrier protection and lack of irritation.
We also run microbiome culture assays, demonstrating that our formulas maintain or even foster beneficial bacterial populations (e.g., Staphylococcus epidermidis, Cutibacterium acnes in non‑pathogenic balance).

Real‑World Patch Trials

Volunteer panels apply each batch under dermatologist supervision for 7 days—reporting on comfort, hydration, and any redness or sensitivity.
Only batches with 100% “non‑irritating” feedback move forward to full-scale packaging.

Our “Ocean to Bottle” protocol isn’t just a process—it’s a promise. When you choose Marèn, you’re getting:

Uncompromised Potency: Full‑spectrum marine actives preserved by cold science.
Absolute Cleanliness: Microbatch QC and stringent safety testing.
Skin‑First Formulas: pH‑balanced, microbiome‑friendly blends with zero synthetic fillers.
Dive into purity. Experience skincare that’s as thoughtfully crafted as it is effective.