• Preps skin to absorb more
  • Ectoin + adenosine + peptides
  • Firms, smooths fine lines
  • Lightweight booster essence

What it is

A booster essence from Percent Science, a Korean skincare brand built around patented ingredient complexes. It goes on right after cleansing to prep skin so everything you layer next absorbs better.

What it does

The Cellinol-5 complex plus peptides target fine lines and firmness while hydrating ingredients like ectoin and raffinose lock in moisture. Think of it as primer for your routine: it does light lifting on its own and makes the serum and cream after it work harder.

Who it's for

Anyone layering a routine who wants more out of their serum and cream, and anyone starting to see fine lines or dryness.

How to use

How much: A few drops, smoothed over the face.

1. Apply to clean, slightly damp skin after cleansing.
2. Press gently into the face and neck until absorbed.
3. Follow with serum, then cream.

Where it fits: First step after cleansing, morning and night, before serum.

Inside the formula

Ectoin

A protective molecule that helps skin hold hydration and stand up to dryness and pollution.

Raffinose

A plant sugar that slows moisture loss and keeps skin feeling soft.

Resveratrol

An antioxidant that helps defend skin against environmental damage and uneven tone.

Succinic Acid

A gentle exfoliant that loosens dead skin and excess oil without scrubbing.

Adenosine

Supports the look of firmness by helping skin maintain elasticity.

Why we stock it

We stock this because most routines skip the prep step and leave results on the table. A good booster makes everything after it pull more weight.

The clinicals

Supplier reports 95.5% of test subjects saw long-term moisture retention, and 81% saw improved skin tone within 2 weeks.

The Nexus standard

Vetted before it lists

Every brand on our shelf is screened before it can sell here. Fewer than you'd think make it through.

Direct from the maker

We work directly with independent brands and skip the retail markup, so you pay less for the same products.

30-day returns

Changed your mind? Returns are easy within 30 days on unopened products. Secure checkout, always.

About the brand

PERCENT SCIENCE

Clinical Korean skincare, demystified

Percent Science is a skincare brand developed by biotech researchers, originally formulated for high-end dermatology and aesthetic clinics in Korea before debuting in the U.S. Their formulas use carefully selected ingredients from Germany, Korea, and France, paired with a patented delivery technology for deep absorption. The whole point is medical-grade skincare without the medical-grade gatekeeping.

We stock Percent Science because it brings clinic-level anti-aging formulas to the shelf at prices that don't require a dermatologist's budget.

Skincare questions, answered

Where does this go in my routine?

Thinnest to thickest: cleanser, toner, serum, moisturizer, then SPF in the morning. This product's How to use section above tells you its exact step.

When will I see results?

Give it 4 to 6 weeks of consistent use — that's one full skin cycle. Hydration shows up in days; tone and texture take weeks. If your skin reacts badly (stinging, new breakouts that don't settle within a week), stop using it.

I have sensitive skin. Will this irritate me?

Patch test first: a dab behind your ear or along your jawline, wait 24 hours. Fragrance-free formulas are the safest bet for reactive skin — check the highlights on this page.