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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Sticking to Molds
Adhesion problems caused by moisture imbalance or mold issues.
Stirring (Candle Making)
Mixing to evenly distribute fragrance and additives without introducing excess air.
Stirring (Not Shaking)
Mixing gently to combine ingredients evenly without creating air bubbles or foam.
Storage Conditions
Environmental factors that influence product longevity and safety.
Storage Containers
Rigid or sealed containers used to protect finished products.
Storage Recommendations
Guidelines for storing products to maintain stability and safety.
Straight Hair (Type 1)
Hair that grows without a visible wave or curl pattern.
Stratum Corneum
The outermost layer of skin responsible for protection.
Stretch Mark Cream
A product designed to support skin elasticity and reduce visible marks.
Sugar
Added to soap to enhance lather and boost bubble formation.
Sugar (Body Scrubs)
Dissolving crystals used as a gentle, skin-smoothing exfoliant.
Sugar Scrub
A gentle exfoliant using sugar crystals that dissolve easily.
Sulfate-Free Body Wash
A gentler cleanser made without harsh foaming agents.
Sulfate-Free Shampoo
A gentler cleanser formulated without harsh foaming agents.
Sulfates
Cleansing agents that can be harsh if overused or improperly formulated.
Sun Protection (Body)
Products formulated to protect body skin from UV exposure.
Sun Spots (Solar Lentigines)
Flat brown spots caused by cumulative sun exposure.
Sunflower Oil
A mild, non-greasy oil rich in vitamins that helps moisturize and protect the skin.
Sunflower Oil (Bath Bombs)
A mild, affordable oil used to condition skin and support structure.
Sunflower Oil (Body Care)
A gentle, affordable oil used to condition and protect the skin barrier.
Sunscreen (Anti-Aging)
Daily sun protection used to prevent premature aging.
Sunscreen Daily
Daily use of sun protection to prevent damage and aging.
Superfat (Lye Discount)
The intentional addition of extra oils in soapmaking to remain unsaponified, creating a more moisturizing bar.
Surface Bumps
Uneven textures caused by poor mixing or mold pressure.
Surface Decoration
Decorative elements applied only to the exterior surface.