Lye (Sodium Hydroxide)
The essential alkali ingredient required to make bar soap from scratch. While lye is caustic and requires careful handling with gloves and eye protection, it's completely safe when used properly. During saponification (the reaction between lye and oils), lye transforms completely—properly made soap contains no lye in the finished product. Melt and pour and rebatch soap makers don't work with lye directly since saponification already occurred during base manufacturing.
Other Terms
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Premature Fizzing
Early activation caused by excess moisture exposure.
Pre-Poo
A pre-wash treatment that adds slip or protection before cleansing.
Preservative-Free Body Products
Products formulated without preservatives, requiring strict hygiene and short shelf life.
Preservative-Free Hair Products
Products made without added preservatives, typically needing strict hygiene and shorter use windows.
Preservative Resources
Trusted references for selecting and using protection against microbial growth correctly.
Preservative (Skincare)
An ingredient or system used to prevent microbial growth and spoilage.
Preservative Systems
Combined methods used to keep products safe from microbes.
Preservative Systems (Body Care)
Combined ingredients used to prevent microbial growth and ensure product safety.
Preservative Systems (Hair Care)
Ingredient combinations that prevent microbial growth and keep products safe during use.
Pre-Shampoo Treatment (Pre-Poo)
A prep step before washing that protects strands and improves moisture retention.
Pre-Shave Oil
An oil applied before shaving to soften hair and reduce friction.
Pressed Flowers
Dried botanicals used for decoration that can pose a fire risk if too close to the flame.
Pre-Tabbed Wick
A ready-to-use option that already has the metal base attached for faster setup.
Preventing Gel Phase
A method used to keep soap cool during saponification so the internal temperature never rises enough to enter full gel.
Pricing Bath Bombs
Determining costs and profit margins.
Pricing Strategies
Setting prices based on costs, margins, brand positioning, and what the market will pay.
Product Liability
Legal responsibility for product-related harm.
Product Liability Insurance (Hair Care)
Coverage that helps protect a maker financially if a product causes harm or triggers claims.
Product Testing
Evaluating burn behavior, scent performance, and safety across multiple trials and conditions.
Professional Consultation
Seeking expert advice for persistent or complex skin concerns.
Propanediol
A multifunctional humectant and solvent that improves hydration and ingredient penetration.
Proper Wick Trimming
Cutting the string to the right length to reduce soot, smoke, and oversized flames.
Propolis
A bee-derived ingredient known for antimicrobial and healing properties.
Propylene Glycol
A humectant and solvent that enhances moisture retention and ingredient deli
Protective Equipment
Safety gear like gloves, eye protection, and masks used to reduce exposure and injury.