Handmade Soap Course

Lesson 1 • Oils and Their Properties

Surveys common soap-making oils and their fatty acid profiles. Establishes how oil selection drives bar hardness, lather, and skin feel. This knowledge helps match oil blends to desired bar characteristics.

Lesson 2 • Lye Types and Behaviour

Compares sodium hydroxide and potassium hydroxide and their distinct applications. Prepares learners to select the correct alkali for any soap project.

Lesson 3 • Water and Liquid Alternatives

Examines water's role as the lye solvent and introduces alternative liquids. Shows how liquid choice affects trace speed and final bar properties.

Lesson 4 • Saponification Chemistry Explained

Breaks down the saponification reaction step by step using plain language. Connects chemical theory directly to observable soap-making outcomes.

Lesson 1 • Workspace Organisation and Cleanup

Designs an efficient soap-making station and safe cleanup routine. Keeps the workspace functional, contamination-free, and ready for repeated use.

Lesson 2 • Mould Types and Preparation

Compares silicone, wood, and plastic moulds and their preparation needs. Ensures clean unmoulding and professional bar shapes from the first batch.

Lesson 3 • Personal Protective Equipment

Specifies required PPE for handling lye and hot oils. Directly prevents the most common soap-making injuries before any hands-on work begins.

Lesson 4 • Essential Equipment Selection

Identifies every tool needed from mixing bowls to thermometers and explains material compatibility. Prevents equipment damage and contamination.

Lesson 1 • Balancing Oil Profiles

Teaches how to blend oils to hit target hardness, lather, and conditioning scores. Produces well-rounded bars rather than single-oil extremes.

Lesson 2 • Scaling Recipes Up and Down

Demonstrates proportional scaling for batch size changes without reformulation errors. Prepares learners for both small test batches and larger production runs.

Lesson 3 • Using Soap Calculators

Walks through popular online soap calculators step by step. Teaches learners to verify outputs and avoid over-reliance on automated tools. Understanding each input ensures accurate lye amounts and balanced recipes.

Lesson 4 • Understanding SAP Values

Explains saponification values for individual oils and how they drive lye amounts. Builds the mathematical foundation for all recipe creation.

Lesson 1 • Curing Cold Process Bars

Details the 4–6 week curing process and environmental conditions for best results. Explains the chemistry still occurring after unmoulding. Proper cure leads to optimal hardness, mildness, and lasting fragrance.

Lesson 2 • Mixing Oils and Lye Solution

Covers melting solid oils, cooling lye solution, and combining both at correct temperatures. Prevents false trace, ricing, and separation issues.

Lesson 3 • Cold Process Method Overview

Introduces the cold process workflow and its advantages over other methods. Sets expectations for timing, temperature, and the curing period ahead.

Lesson 4 • Adding Colourants and Fragrance

Explains when and how to incorporate colourants and fragrance oils at trace. Prevents acceleration, ricing, and uneven colour distribution. Timing the addition also preserves scent integrity and colour vibrancy.

Lesson 5 • Reaching and Reading Trace

Defines light, medium, and heavy trace and teaches recognition by sight and texture. Ensures learners pour at the correct consistency for their design.

Lesson 1 • Choosing the Right Method

Compares all methods across speed, complexity, customization, and end-use. Empowers learners to match method to project goals confidently. Selecting wisely saves time and aligns product with market expectations.

Lesson 2 • Melt and Pour Soap Basics

Introduces pre-made soap bases and the melt-and-pour workflow for lye-free crafting. Ideal for beginners, children's projects, and embedded designs.

Lesson 3 • Rebatching and Soap Rescue

Teaches how to salvage failed cold process batches through rebatching. Reduces waste and builds problem-solving confidence. This method also allows creative reformulation of rescued soap.

Lesson 4 • Hot Process Method Deep Dive

Covers cooking soap batter to full saponification using heat. Produces usable bars faster than cold process with a rustic aesthetic. Heat accelerates the reaction, delivering a fully cured bar in hours.

Lesson 1 • Natural Colourants in Soap

Surveys plant-based colourants including clays, botanicals, and oxides and their behaviour in lye. Teaches realistic colour expectations and fade prevention.

Lesson 2 • Stability and Shelf Life Factors

Identifies ingredients that cause rancidity, DOS, and scent fade over time. Teaches formulation choices that maximize bar longevity. Proper antioxidants and packaging further extend shelf life.

Lesson 3 • Synthetic Colorants and Micas

Covers micas, oxides, and ultramarines for vibrant, stable color in cold process. Explains morphing risks and how to prevent unwanted color shifts.

Lesson 4 • Fragrance Oils vs. Essential Oils

Compares synthetic fragrance oils and natural essential oils for scent performance. Guides safe usage rates and skin sensitization awareness.

Lesson 1 • Layered and Striped Soap

Guides timed layering of contrasting colors for clean horizontal stripes. Teaches adhesion between layers and preventing cracking at seams. Precise timing ensures sharp lines and durable layers.

Lesson 2 • In-the-Pot Swirl Techniques

Demonstrates classic in-the-pot swirl methods using divided batter and color. Produces marbled interiors visible on every cut bar. Mastery of this technique adds visual depth and market appeal.

Lesson 3 • Embedding and Specialty Pours

Introduces embedded soap chunks, confetti, and column pours for complex designs. Pushes learners toward signature styles that stand out at market.

Lesson 4 • Controlling Trace for Design

Teaches how to manipulate trace speed using temperature, fragrance, and oil choice. Precise trace control is the prerequisite for every design technique.

Lesson 1 • Evaluating Finished Bar Quality

Teaches sensory and functional evaluation of cured bars for lather, hardness, and scent. Creates a personal quality benchmark for every batch.

Lesson 2 • Record Keeping and Batch Logs

Establishes a systematic batch logging practice for recipes, results, and adjustments. Enables continuous improvement and consistent replication of successful bars.

Lesson 3 • pH Testing and Safety Checks

Covers zap test, pH strips, and phenolphthalein testing for lye safety. Ensures every bar released for use is fully saponified and skin-safe.

Lesson 4 • Scaling to Small Production

Addresses workflow efficiency, batch scheduling, and inventory management for higher volume. Prepares learners to move from hobby to consistent small-scale output.