Carbon Dioxide (CO2)
The gas produced during fizzing reaction creating bubbles and agitation in bathwater. CO2 is what makes bath bombs "bomb"—the dramatic fizzing and bubbling effect.
Other Terms
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Layering (Bath Bombs)
Pouring or pressing sections in stages to create visual depth.
Layering (Candles)
Pouring multiple colors or scents in stages to create stacked bands or gradients.
Layering Melt and Pour
Layering involves pouring soap in stages to create clean, distinct layers without colors or scents bleeding together.
Layering Order
The recommended order for applying products to maximize effectiveness.
Layers Separating
When poured sections fail to bond properly, causing layers to split apart due to temperature differences, timing issues, or poor adhesion.
Leave-In Conditioner
A lightweight hydrator left in to improve slip, softness, and protection through the day.
Light Trace
The early stage of soap thickening when the mixture is still pourable but leaves faint trails when drizzled.
Liquid Candle Dye
A concentrated liquid pigment used to tint wax in small, measured amounts.
Liquid Colorants (Melt and Pour)
Liquid colorants are pre-mixed dyes or pigments used to easily tint melt-and-pour soap with consistent, even color.
Liquid Germall Plus
A broad-spectrum preservative effective at very low usage rates in emulsions.
Liquid Germall Plus (Hair Care)
A strong, low-use preservative often chosen for lotions and conditioners with water.
Listening to Your Skin
Adjusting routines based on how skin responds over time.
Loaf Mold
A long, rectangular mold used to make a single block of soap that is later sliced into individual bars.
Loofah Soap
Loofah soap is a type of soap made by embedding a natural loofah sponge inside the bar for built-in exfoliation.
Loss of Elasticity (Skin Laxity)
Sagging caused by reduced firmness and structural support.
Lost Scent
Fragrance fading due to evaporation or oxidation.
Lotion Bar
A solid moisturizer that melts on contact with skin warmth.
Lotion Moisturizer
A medium-weight formula offering balanced hydration.
Low Manipulation
Minimizing styling and handling to reduce breakage and preserve definition.
Low Sweat Base (No Sweat Glycerin Base)
A glycerin soap base formulated to minimize sweating or moisture buildup on the surface, keeping bars clear and smooth.
Low-Poo
A mild cleansing approach using minimal foaming agents.
Lye (Sodium Hydroxide)
A strong alkaline substance used to trigger the chemical reaction that turns oils and fats into soap.
Lye Burns
Chemical burns caused by contact with sodium hydroxide or fresh soap batter, requiring immediate rinsing and proper safety precautions.
Lye Calculator (Soap Calculator)
A tool that determines the precise amount of alkali needed to safely turn oils into soap.
Lye Water (Lye Solution)
A solution of lye and water used to initiate the saponification process, turning fats and oils into soap.