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Keep It Simple Cosmetics

Keep It Simple

The blue copper peptide serum in its frosted glass dropper bottle

Only the basics. Nothing extra.

Our first product: a Copper Tripeptide-1 serum with a short ingredient list, for skin that looks smoother and firmer.

Shop the serum
Frosted glass bottle of blue copper peptide serum with a rose-gold collar and white dropper bulb

The serum

Copper Peptide Serum

20 ml

A lightweight serum with Copper Tripeptide-1 for smoother, firmer-looking skin.

$39.99

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The science

Why copper peptide

Copper Tripeptide-1 is a skin-conditioning peptide, and the reason the serum is blue.

Used once a day, skin looks firmer and smoother, with fewer visible fine lines.

Read the science

Why shop with us

  • Free shipping over $75

    Flat-rate shipping below that, to anywhere in the US.

  • Ships in 7 business days

    Every order is packed by hand and sent with tracking.

  • Full ingredient list

    Every ingredient is listed on the product page, in label order.

  • Secure checkout

    Payments are handled by Stripe. We never see your card details.

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