Introducing Firm + Replenish Serum

Consider it your essential layer of reinforcement. Firm + Replenish Serum replenishes skin’s natural barrier function, primes skin for moisture, and helps skin to appear firmer over time.
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B-Silk™ Protein
Firm + Replenish Serum
Firm + Replenish Serum features a double dose of b-silk™ protein to reestablish skin’s barrier after cleansing and exfoliating.

68% Average improvement in skin elasticity after 8 weeks

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B-Silk™ Protein
Revitalizing Hydrogel Moisturizer
Our lightweight gel moisturizer boosts hydration, quickly absorbs, and layers effortlessly under makeup.

94% Improved hydration in 4 weeks

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B-Silk™ Protein
Hydrate + Restore Rich Cream
Our nourishing cream moisturizer hydrates deeply to restore the skin, reduce the appearance of fine lines, and improve elasticity.

91% Enhanced skin texture and smoothness in 4 weeks

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Try our four-week Starter Set

B-silk™ protein is clinically shown to increase hydration, radiance, and elasticity in just four weeks. Try our four-week Starter Set to see for yourself.
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What is b-silk™ protein?

An innovative high molecular weight structural protein that complements the vital functions of your skin and reinforces its extracellular matrix (aka collagen and elastin).
Improves skin firmness and elasticity.
Improves overall radiance and luminosity.
Enhances skin texture and smoothness.
We Always:
Employ the scientific method, delivering tangible benefits while honoring our commitment to making the cleanest, safest ingredients possible.
We Never:
Create formulations we wouldn't feel good about using ourselves, make products without undergoing rigorous research, or test our products on animals.

It's not magic, it's science

The innovation

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You’ve got questions. We’ve got answers.
Why are you called Eighteen B?
Our key ingredient, b-silk™ protein, is a high molecular weight protein made up of a series of 18 repeating molecular segments (we call them blocks, which is where the “b” comes from). Each of these blocks is made up of an amino acid pattern that was ...
Where are Eighteen B products made?
Our products are manufactured in California, with high quality ingredients sourced all over the world.
What is a structural protein?
Structural proteins, like collagen and elastin, are a natural component of your skin’s extracellular matrix. They work like a scaffolding, providing strength and elasticity to your skin.
Our promise

We are devoted to continuous scientific innovation.

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