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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Unmolding
Removing the shaped product from the mold safely.
Usage Rate
Usage Rate is the recommended amount of fragrance or essential oil you can safely add to a soap recipe based on IFRA guidelines.
UVA Rays
Longer-wavelength radiation linked to premature aging and deep skin damage.
UVB Rays
Shorter-wavelength radiation responsible for sunburn and surface damage.
UV Damage
Degradation from sun exposure that fades color and weakens the outer layer.
Vanilla Content (Vanillin)
Refers to the amount of vanillin in a fragrance, which can cause soap to darken over time.
Vanillin Content (Bath Bombs)
The amount of vanilla-related compounds that may cause discoloration over time.
Vanillin Content (Candle Making)
A component that can darken wax and influence final color, especially in lighter blends.
Ventilation (Candle Making)
Keeping fresh airflow to reduce fume buildup and maintain safer working conditions.
Ventilation (Cold Process)
Adequate airflow used to disperse lye fumes and maintain a safer working environment during soap making.
Virgin Hair
Hair that has never been chemically or color altered.
Vitamin C (Body)
An antioxidant ingredient used to brighten and improve overall skin appearance.
Vitamin C (Brightening)
A brightening antioxidant that helps reduce uneven tone.
Vitamin C Derivatives
Stabilized forms of vitamin C that convert on the skin with less irritation.
Vitamin C Serum
A brightening formula designed to improve tone and boost radiance.
Vitamin E (Tocopherol)
A natural antioxidant added to soap to help slow oil oxidation and extend shelf life.
Vitamin E (Tocopherol) (Body Care)
An antioxidant that helps protect skin from oxidative stress and supports moisture retention.
Vitamin E (Tocopherol) (Skincare)
A skin-conditioning antioxidant that supports barrier health and moisture retention.
Volcano
An overheating reaction where soap rapidly expands, cracks, or erupts due to excessive heat during saponification.
Volumizing Conditioner
A lightweight formula designed to add body and lift without weighing strands down.
Volumizing Shampoo
A formula intended to create lift and fullness.
Volumizing Spray
A spray that lifts and thickens the look of hair without heavy residue.
Votive Candles
Small candles designed to be burned in holders, producing a short but steady glow.
Wait Time
The pause between product applications to allow absorption and pH adjustment.
Walnut Shell Powder
A coarse natural exfoliant that provides strong physical scrubbing.