“Make a shampoo for a sensitive scalp.”
“Put a lot of this ingredient in.”
“Make it feel more premium.”
“I think this sample is fine.”
BUILDB / COSMETIC PRODUCT DEVELOPMENT RESIDENCY
Do not learn how cosmetics are made.
Learn how product decisions are made.
From market research and competitor analysis to formula architecture, factory meetings, sample revisions, cost, packaging and clinical proof.
A 12-week residency that enables founders to direct product development—not be directed by a factory.
A 12-week residency that enables founders to direct product development—not be directed by a factory.
01 / THE REAL PROBLEM
A manufacturer does not
plan the product for you.
A manufacturer develops what it is asked to develop. Without founder-owned criteria, the decision becomes choosing the ‘least bad’ option among factory proposals.
01Who is this product for?
02How should it feel?
03Which ingredients matter—and why?
04What must differ from the benchmark?
05What proof is actually needed?
06What must it cost?
02 / BEFORE → AFTER
Turn subjective requests into
development-ready language.
01Keep sufficient first-lather cleansing while defining the primary and secondary surfactant system for a sensitive-scalp target.
02Improve dry-down root volume and residue against the benchmark.
03Separate the marketing ingredient from the Active System that drives performance.
04Sample B feels good initially but raises sebum perception at four hours; revise this in the next round.
03 / 3 MONTH STRUCTURE
Build one repeatable product-development
system over 12 weeks.
011 MONTH CLASS
DEFINEDecide what to build
Market → Customer → Benchmark → Product → Texture → Formula
One 3-hour class weekly × 4 + daily assignment feedback021 MONTH FIELD
BUILDConnect the system to the field
Prompt → OEM → Ingredient → Package → Clinical
Build product-development prompts and apply them in the field031 MONTH CONTROL
CONTROLDirect live development
KEEP → CHANGE → DROP → TEST
Two 30-minute reviews weekly × 4 / eight 1:1 reviews04 / MONTH 01 · DEFINE
Four weeks. Four decisions.
Every decision becomes a document.
ASSIGN→REVIEW→REVISE→DECIDE
WEEK 01MARKET OPPORTUNITYFind the product worth building.
＋
Find the product worth building.
Collect demand, price, review, complaint and proof language on one product-development standard—not a single search-volume number.
STUDYCategory structure and search demandOlive Young, Coupang and Naver rankingPrice, volume, review and repeat reasonAd claim, clinical language and social vocabulary
OUTPUTMarket Opportunity MapCompetitor MatrixINCI DatabaseCustomer Pain MapHero SKU Shortlist
WEEK 02PRODUCT ARCHITECTURETranslate customer language into factory language.
＋
Translate customer language into factory language.
Move from Customer Need → Product Performance → Sensory → Formula Architecture → Manufacturing Brief.
STUDYTexture versus conceptReading INCI and reverse-engineering benchmarksActive, marketing ingredient and use levelFormula structure and factory request
OUTPUTProduct Development BriefFormula ArchitectureIngredient Matrix
WEEK 03SAMPLE DEVELOPMENTRemove ‘I think it feels good.’
＋
Remove ‘I think it feels good.’
Score appearance, dispensing, spread, immediate feel, 30 minutes, four hours, eight hours, repeat and over-use on a timeline.
STUDYProduct-specific sensory criteriaBlind sample comparisonDose and repeat-use toleranceRevision requests in formulation language
OUTPUTSample Evaluation SheetSample ComparisonRevision RequestSample HistoryFinal Texture Specification
WEEK 04CLAIM × CLINICAL × COSTTurn a good product into a sellable product.
＋
Turn a good product into a sellable product.
Connect Claim → Formula → Clinical → Content while deciding proof priority and commercially viable cost.
STUDYFunctional cosmetics, claims and legal copyClinical lab and test priorityMOQ, production cost and target retailTarget margin and excessive-cost removal
OUTPUTClinical Priority MapClaim × Formula × Clinical MapTarget Cost SheetManufacturing Brief v1
05 / MONTH 02 · BUILD
Use AI as a
product-development tool.
This is not ‘plan a cosmetic product with ChatGPT.’ Each prompt is built with role, context, constraints and a defined output for real development work.
BUILDBPROMPT
SYSTEM
SYSTEM
06 / FIELD
Connect the screen to
the manufacturing floor.
Manufacturer
Development briefSampleFormulaMOQBulk priceProduction·Filling·PackingQuality
Supplier
INCICOAMSDSTDSUse levelMOQ·Lead TimeExclusivity·Origin
Component
Volume·NeckPump·DosageTube·AirlessCapCoating·PrintMetallizing·FoilMOQ·Defect rate
Lab
Test itemSubjectsTimelineQuoteDeliverableUsable languagePriority
THE FACTORY SAYS
“This ingredient is used at a high level.”At what percentage?
THE FACTORY SAYS
“It is patented.”Which patent? Ingredient, composition, claim—and what is the patent number?
THE FACTORY SAYS
“This is the best formula.”Best by which standard: benchmark, sensory, stability, cost or efficacy?
07 / MONTH 03 · CONTROL
The final month is not a class.
It is live product-development PM.
KEEPCHANGEDROPTEST8 × 1:1
REVIEW
REVIEW
Review incoming data
Manufacturer replies · samples · quotes · ingredient documents · package samples · clinical bids · cost
Make the next decision
What stays, changes, stops or requires another test is logged with the reason and next action.
ISSUEDATADECISIONWHYNEXT
Low viscositySample 02ThickenTarget sensory mismatchSample 03
Cost overrun₩3,150Change componentTarget ₩2,700Rebid RFQ
08 / FINAL DELIVERABLES
4 SYSTEMS
20 OUTPUTS
MARKET SYSTEMData that makes market decisions
- 01Market Opportunity Map
- 02Competitor Matrix
- 03INCI Database
- 04Customer Pain Map
- 05Hero SKU Positioning
PRODUCT SYSTEMProduct intent in factory language
- 01Product Development Brief
- 02Formula Architecture
- 03Ingredient Matrix
- 04Benchmark Standard
- 05Sample Evaluation Sheet
- 06Sample Revision History
MANUFACTURING SYSTEMProduction-ready specifications
- 01OEM / ODM RFQ
- 02Manufacturer Comparison
- 03BOM
- 04Cost Simulation
- 05Packaging Specification
- 06Manufacturing Schedule
PROOF SYSTEMProof that can be sold
- 01Clinical Priority Map
- 02Claim × Formula × Clinical Map
- 03Final Manufacturing Brief
09 / BUILDB READY GATE
A product does not enter production
because it feels right.
Why does this product need to exist?
Whose problem does it solve?
Does the formula deliver the product goal?
Is the target sensorial experience achieved?
Can the economics support a business?
Can clinical proof support the claim?
Are specifications complete enough to enter production?
10 / WHO IS THIS FOR?
For founders who need
a decision system.
First-time beauty founder
You cannot decide what to build first.
Founder already receiving samples
Samples arrive, but you do not know what to revise.
Brand requiring a renewal
INCI, texture, cost and proof need to be rebuilt.
BM / product planner
You want to direct ODM work—not only receive proposals.
11 / COHORT 01 · FIELD RECORD
Real problems.
Documented changes.
Should the next product be built on founder instinct alone?
Product candidates existed, but the decision standards were scattered.
Market signals, competitive structure and portfolio priority were compared on one standard.
Demand and differentiation were reviewed to decide the next product-development priority.
Market analysis · Product direction · Decision criteria
How should cleanser, serum and gel cream work as one system?
Three initial SKUs existed, but their roles and factory criteria were disconnected.
Target problems, competitive structure, brand direction, texture and sensory standards were connected.
The three SKU roles and sample criteria became one development system.
Brand definition · 3-SKU system · Development brief · Clinical structure
Only publicly shareable teams, actual starting questions and the scope covered in the program are shown. No invented testimonial language is used.
12 / TUITIONPRODUCT
PRODUCT
DEVELOPMENT
RESIDENCY
3 MONTHS / MAX 5 TEAMS
₩3,500,000+ VATTOTAL ₩3,850,000
BUILDB / COSMETIC PRODUCT DEVELOPMENT RESIDENCY
Not a class that builds one product.
Build the founder’s decision system.
3 MONTHS / MAX 5 TEAMS₩3,500,000 + VATAPPLY FOR COHORT 02 ↗
COHORT 02 / APPLICATION