The Skin Stack

The Skin Stack  
The Skin Stack - Build Your Protocol
Inside the playbook

What you'll actually get.

The framework

  • The full 5-Step Skin Reset: five ingredient categories, one layering protocol, AM and PM order of operations
  • How to introduce prescription-strength actives (retinoids, tretinoin) without wrecking your barrier
  • Which in-office treatments are worth the money at 30, 40, and 50, and which are marketing
  • How to build a routine budget that scales as your skin's needs and your income change

The full stack

  • The complete five-product base stack plus the advanced tier for actives and treatments
  • A dermatologist-visit script for when a mole, a rash, or a reaction needs a professional, not a serum
  • The exact in-office treatment menu worth paying for, with realistic price ranges and how often you actually need them
  • How to layer sunscreen with actives without the pilling, the whitecast, or skipping it altogether
Kathryn Crosby, founder of Build Your Protocol
Why I wrote this

A dermatologist quoted me $1,200 for a routine I could build myself.

It wasn't a bad recommendation. It was a good routine, professionally built, priced for someone who'd never have to think about it twice. I couldn't justify it on a consulting income with four kids in the house, so I rebuilt the same logic from ingredient studies and derm-adjacent research instead of a single office visit. The five-product base stack I landed on costs a fraction of that quote and does the same job. This playbook is the full system, base stack through advanced actives and the in-office treatments actually worth paying for.

— Kathryn Kathryn Crosby · 44 · Single mom of four · Operator
Want more?

The Skin Stack is the full system. Want everything?

This parent playbook already includes the 5-Step Skin Reset in full, plus the advanced tier. The only upgrade from here is the whole library.

Vol. 02 · Parent · $79

The Skin Stack

What you're looking at. The 5-Step Reset plus advanced actives and the in-office treatment guide.

$79

All upgrade options are available as one-click add-ons at checkout. No upsells after purchase.

Chapter 1 is free. Sample before you buy.

No refunds, no return windows, no “give it 30 days.”

The first chapter — the five-category audit of what's already in your cabinet — is yours for an email address. If the method doesn't earn you in 22 pages, the full playbook won't either.

Send Chapter 1
Honest answers

Things you're probably wondering.

Is this medical advice?

No. None of it is. I'm not a dermatologist. If you have a diagnosed skin condition, a suspicious mole, or a reaction that isn't settling, see one — this playbook tells you exactly when that's the right call.

How long until I see results?

The base stack shows texture changes in two to three weeks. Advanced actives like retinoids take six to twelve weeks for full effect, and the playbook walks through the ramp-up schedule.

Will I have to buy expensive products?

The base stack has a drugstore option for every slot. The advanced tier includes some prescription-strength options that require a derm visit, which the playbook explains how to request efficiently.

Can I upgrade to the full library later?

Yes. At checkout you can add the full Library Bundle ($179) in one click, which includes this playbook plus the other eight. After purchase, you can buy additional playbooks at full price on the Library page anytime.

What's the refund policy?

There is none. All sales final. That's why Chapter 1 is free — so you can sample the method before you spend a dollar. If the free chapter doesn't sell you, the full playbook won't either.

Who is this not for?

Women who already have a dermatologist-built routine that's working. Women looking for a natural-only, actives-free approach. Women who want to be told to buy the $200 cream.

One $79 playbook. The full skin system. No $1,200 quote required.

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