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Fermentation in Cosmetics: From Ingredient Selection to Stable, Claim-Ready Formulations

Fermentation in Cosmetics: From Ingredient Selection to Stable, Claim-Ready Formulations
Language: English
Length: 90 min
Oct 28, 2025 03:00 PM
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Course Description

Fermented oils and botanical extracts are everywhere, but many teams still struggle to tell what fermentation actually changes, how to integrate these actives without destabilizing formulas, how to design with authentic colour and aroma (instead of fighting them), and how to turn efficacy data into claim-safe and sustainability-grounded stories that will hold up with RA/QA.

In this masterclass, expert Priscilla builds a practical path from fundamentals to execution. You’ll learn where fermentation truly helps (and where it doesn’t), how to choose between fermented oils vs. botanicals, how to design sensorials that embrace natural colour/aroma, how to read efficacy data (incl. a bisabolol comparison), and how to integrate these actives using supplier guidelines, then link your choices to measurable sustainability metrics and compliant claims.

Intermediate
Level
Priscilla Rolvers
Priscilla Rolvers
0 courses

Priscilla Rolvers is the founder of Green Cosmetics Revolution, a consultancy dedicated to making the cosmetics industry more sustainable and regenerative. With over a decade of experience formulating natural care products for indie brands and several years in manufacturing, Priscilla combines deep technical expertise with a passion for driving meaningful change.

Her work focuses on helping cosmetics professionals create sustainable formulations, streamline their sourcing practices, and innovate with environmental impact at the forefront. Priscilla’s expertise spans sustainable formulation development, ingredient sourcing, and guiding brands toward greener business practices.

She is currently writing a book on sustainable cosmetics development, sharing her knowledge and insights to empower professionals across the industry.

Fields of Expertise: Sustainable cosmetics, eco-design, natural cosmetics, vegan cosmetics, regenerative practices in cosmetics, sustainable ingredient sourcing.

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Why should you view this course?

Formulators are rapidly testing fermented oils and botanical extracts, but often run into real-world hurdles: how fermentation actually changes functionality, how to work with authentic colour/aroma without fighting them, what use-level and processing rules to follow, and how to convert evidence into claim-safe, sustainable product stories.

How to proceed? Join this course and our expert Priscilla will cut through the noise with a practical, 90-minute path. You’ll be able to:

  1. Choose & position fermented actives with confidence by distinguishing oils vs. botanical extracts, knowing what truly changes post-fermentation, and mapping them to formula archetypes.

  2. Integrate without “frame formulations” using clear guidance on solubility, order of addition, compatibility, typical use ranges, and supplier documentation - so serums, creams, and masks remain stable and sensorially on-brand.

  3. Turn evidence into compliant, sustainable claims by reading purity/concentration/test data (incl. a bisabolol comparison), embracing authentic colour/aroma in design, and linking ingredient choices to measurable sustainability metrics and audit-ready documentation.

Who should join this course?
    • Cosmetic formulators & R&D scientists in skincare, haircare, and personal care
    • Product developers / technical managers planning launches with fermented actives
    • RA/QA professionals aligning claims, documentation, and audits
    • Brand owners & contract manufacturers seeking sustainable, evidence-backed stories

  • Complete the course and (unlock your personalized certificate)– your badge of accomplishment awaits!

  • This course is suitable for intermediate level proficiency
    Intermediate
Questions you will be able to answer after this course:

  1. Where does fermentation help (and not help) for my formula, and what properties actually change post-fermentation?

  2. Should I choose fermented oils or botanical extracts for a given brief and how do I map each to the right formula archetype?

  3. How do I design with natural colour and aroma - when to embrace, when to modulate, and how to keep feel/texture on target?

  4. What integration rules matter most (solubility, order of addition, processing windows, compatibility) across serums, creams, and masks - using supplier guidelines effectively?

  5. How do I read efficacy data (purity, concentration, in-vitro/in-vivo) and translate it into claim-safe language and documentation?

  6. Which sustainability metrics (feedstock, energy/water, biodegradability, fossil-derived content, microplastic-free angles) should I track, and how do I avoid greenwashing?

  7. What are the claim boundaries for “soothing,” “antioxidant,” “microbiome-friendly,” etc., across key markets, and how do I stay audit-ready?

Course Outline
The following sections will be covered during this session:
  • Introduction to Fermentation in Cosmetics
  1. Traditional vs cosmetic fermentation: where it helps and where it doesn’t
  2. 2025–26 market signals and consumer language
  3. Science snapshot: bio-transformation and functional changes

🌟 Outcome: Understand fundamentals and where fermentation creates useful differences

  • Two Key Directions in Fermented Actives
  1. Fermented Oils: benefits, stability considerations, typical use ranges
  2. Fermented Botanical Extracts: bioactivity, skin compatibility, solvent systems
  3. What truly changes post-fermentation (and what doesn’t)

🌟 Outcome: Distinguish oil vs botanical routes and map to formula archetypes

  • Working with Natural Colour & Aroma
  1. Designing with colour and aroma: embracing natural hues & scents; when and how to modulate
  2. Sensory strategies: pairing notes, compatible pigments, packaging cues, and claims language
  3. Texture/structure: viscosity, feel, and phase-management with fermented inputs

🌟 Outcome: Build enjoyable sensorials while honouring the ingredient’s authentic profile

  • Active Efficacy & Comparative Case
  1. Evaluating purity, concentration, and test methods (in-vitro/in-vivo/claims support)
  2. Case: Bisabolol - comparing three sources, including a naturally fermented version
  3. Translating efficacy data into formulation-relevant guidance

🌟 Outcome: Read and apply evidence to choose and position fermented actives credibly

  • Integration Guidelines & Application Pathways
  1. How to incorporate oils and actives: solubility, order of addition, processing, compatibility
  2. Typical use-level ranges and system-specific cautions (serums, creams, masks)
  3. Supplier documentation: how to use and adapt their formulation guidelines effectively

🌟 Outcome: Gain ready-to-use integration playbooks without
prescribing fixed bases

  • Making Formulations More Sustainable with Fermented Ingredients
  1. Sustainability pathways: renewable feedstocks, by-product upcycling, milder process routes
  2. What to measure: carbon/energy/water, biodegradability, fossil-derived content, microplastic-free angles
  3. Aligning claims & certifications (and avoiding greenwashing)
  4. How marine and fermented ingredients can complement each other in a portfolio

🌟 Outcome: Connect fermentation choices to clear sustainability wins and defensible claims

  • Claims & Regulatory Awareness
  1. Claim-safe language: soothing, antioxidant, microbiome-friendly, etc.
  2. Evidence standards vs. marketing assertions; audit readiness
  3. Global regulatory touchpoints for fermented cosmetic actives

🌟 Outcome: Frame compliant, credible claims that survive scrutiny

  • Wrap-Up & Next Steps
  1. Summary of formulation tips and ingredient selection insights
  2. Where to go next: suppliers, labs, deeper testing
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Prerequisites for this course
  • Basic understanding of cosmetic formulation (emulsions/serums), raw-material selection (oils, botanical extracts), solubility/polarity, and order of addition.
  • Familiarity with preservation & stability fundamentals (pH, viscosity, basic challenge/stability tests) and the ability to read supplier docs (TDS/CoA) to apply use-level guidance.
  • Helpful, not required: Comfort interpreting in-vitro/in-vivo efficacy data, plus basic claims/regulatory and sustainability terminology.
30 min Q & As for this course
Interact directly with your tutor and clarify your doubts
  1. 30 mins per session for Questions and Answers
  2. Clarify your doubts.
  3. If your questions are not answered, dont worry you will recieve tutor’s reply via email after sessions.
Fermentation in Cosmetics: From Ingredient Selection to Stable, Claim-Ready Formulations
€299
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