Your biology. Your formula.

Your skin isn't static. It responds to your environment, lifestyle, barrier health, hydration, inflammation, hormones, and the products you use every day.

So why should your serum be one-size-fits-all?

Beauty Biology Formulary is personalized skincare built from what your skin is actually telling us.

Rather than asking you to choose ingredients or decide which type of serum you need, we begin with Skin Intelligence. Your assessment gives us a deeper look at your skin's patterns, priorities, sensitivities, and current needs.

From there, we do the formulation work.

Your Formulary Experience Includes

Your Skin Intelligence Assessment
Complete our in-depth online assessment designed specifically for personalized formulation. We'll explore hydration, barrier function, sensitivity and reactivity, oil production, congestion, environmental influences, current skincare, changing skin patterns, and your individual goals.

Your Personal Skin Intelligence Profile
You'll receive a concise profile identifying your primary skin priorities and the biological pathways guiding your formulation.

Professional Formulation Review
Your assessment isn't simply matched to a pre-selected serum. Your results are personally reviewed through the Beauty Biology methodology to determine the most appropriate formulation strategy for your skin.

Your Individual Formula
We determine the appropriate serum foundation—aqueous/hyaluronic or lipid-based—and select a focused combination of targeted ingredients based on your Skin Intelligence Profile.

You don't need to choose your actives or know which type of serum your skin needs.

That's our job.

Your Custom 1 oz Serum
Your formula is individually prepared in our formulation studio and identified with its own Beauty Biology Formulary number.

Your Formula Record
We document and retain your formula, allowing you to reorder the same serum through our Formulary Refill service without repeating the original formulation process.

Personalized BGO Pairings
We'll also recommend a small selection of existing BGO skincare that can complement your custom formula, giving you a simple path forward without overwhelming your routine.

A Formula With a Purpose

Your custom serum is designed around the priorities identified through your Skin Intelligence assessment.

Rather than trying to address every possible concern in a single formula, we focus on what your skin needs most. Your serum foundation and targeted actives are selected to work together toward those priorities, creating a formula that is personal, purposeful, and uniquely yours.

When You're Ready for a Refill

Your Beauty Biology formula is kept on file.

If your serum is working beautifully and you simply need another bottle, order a Formulary Refill using your formula number and we'll recreate your existing formula.

If your skin, circumstances, or goals have changed and you'd like us to create a different formula, simply begin a new Formulary experience. You'll complete a new Skin Intelligence assessment so we can evaluate where your skin is now and formulate accordingly.

Because personalized skincare shouldn't mean guessing what your skin needs.

It should begin by understanding it.

Beauty Biology Formulary
Your biology. Your formula.