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Rooted in nature · Elevated by science

BIOLICHEN™ PRESERVATIVE

A preservative with purpose.

Meet BioLichen CosmosPreserve™, the naturally derived preservative we chose to help protect our formulas, with antioxidant properties that give this ingredient an additional purpose.
Intense UV
Extreme temperatures
Total dehydration
Hundreds of millions of years
Inspired by Nature’s Resilience

What can one of Earth's oldest organisms teach us about skin?

Lichens thrive in some of nature’s harshest environments. BioLichen draws on their naturally occurring compounds to help protect skincare formulas from bacteria, yeast, and mold. Puralta brings this nature-inspired innovation into your daily ritual through thoughtfully chosen preservation.
HOW LICHENS SURVIVE

Survival, turned into chemistry.

To withstand conditions that would end most life, lichens produce their own protective compounds - metabolites built over millions of years of adaptation.That resilience is exactly what inspired scientists to study lichen-derived compounds for skincare, and what led us to use BioLichen as our preservative.
THE LICHEN METABOLITES

Three compounds, studied for skin.

The metabolites lichens make to survive are the same ones researchers have studied for skincare.
01
N° 01

Usnic Acid

One of the most studied lichen compounds - long noted for its protective activity.
Studied for
AntioxidantAntimicrobialPhotoprotective
02
N° 02

Atranorin

A lichen metabolite researched for its calming, protective behavior on skin.

Studied for
Anti-inflammatoryCytoprotective
03
N° 03

Fumarprotocetraric Acid

A naturally occurring acid studied across several protective roles.

Studied for
AntioxidantAntimicrobialCytoprotective

MORE THAN A PRESERVATIVE

Preservation that also protects.

Every product must be preserved. The question is how. BioLichen CosmosPreserve™ is a patented, lichen-derived system - so the ingredient that guards the formula can support the skin, too.

Preserves the formula

Antioxidant activity

Antimicrobial

Anti-inflammatory

Cytoprotective

Wound-healing (in lab testing)

PROTECTION BEFORE PERFORMANCE

First protection. Then performance.

At Puralta, thoughtful formulation extends to our preservative. We chose BioLichen for its ability to help preserve our formulas and for its additional antioxidant properties. It reflects our belief that every ingredient should contribute something meaningful. Before Vitamin C brightens or peptides go to work, your skin has already met the base - hydration, antioxidants, and lichen-based protection.
Support comes first; performance follows.
Step one · First

Your skin meets the base.

Olive Leaf Extract · Aloe Vera · BioLichen · Antioxidant support · Hydration · Preservation
→
Step two · Then

The actives go to work.

Vitamin C · Peptides · Plant Exosomes

WHY WE CHOSE IT

Built on nature and then refined by science.

Nature

Nature has already spent millions of years solving hard problems. Lichens survived where almost nothing else could and made the chemistry to do it.

Science

Science helps us understand those solutions. Modern formulation lets us bring a lichen-derived technology into skincare, thoughtfully and safely.

BARRIER FIRST

Nature's best ideas come from its toughest survivors.

Select Puralta formulas feature BioLichen™ — lichen-derived protection, refined for skin.
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