⏳Loading your dashboard… Soap Lye Calculator Unit: grams (g) ounces (oz) kilograms (kg) pounds (lb) Oils Total Oil Weight: 0 g Total Cost: $— + Add Another Oil Soap Type Select Type 🧼 Standard Bar Soap ✨ Luxury / Superfatted Bar (SF 8%) 🧱 Hard Long-Lasting Bar (SF 3%) 🫒 Bastille / High-Olive Bar 💧 Pure Castile Bar 👶 Baby / Sensitive Skin Bar (SF 10%) 🧖 Facial Bar (SF 8%) 🐐 Goat Milk Bar ☕ Exfoliating Bar 🫧 Clarifying Bar (SF 3%) 💆 Shampoo Bar (Normal) 🌵 Shampoo Bar (Dry Hair) 💦 Shampoo Bar (Oily Hair) 🪷 Conditioning Hair Bar 🪒 Shaving Soap (Soft Cream) 🪒 Shaving Soap (Hard Puck) 🧴 Liquid Soap (KOH) 🫙 Liquid Castile Soap 🍦 Cream Soap (Dual Lye) 🧺 Laundry Bar 🍽️ Kitchen / Dish Bar 🐾 Pet Shampoo Bar 🏛️ Aleppo Soap ⚜️ Marseille Soap 🌍 African Black Soap Style 🧪 Syndet Bar (Stearic + SLES) Lye Type NaOH (Sodium Hydroxide — bar soap) KOH (Potassium Hydroxide — liquid soap) Dual Lye (NaOH + KOH blend) NaOH share: 50% | KOH share: 50% Slide left for more KOH (softer/liquid soap), right for more NaOH (harder bar). Lye Purity (%) NaOH purity % KOH purity % NaOH price/kg ($) KOH price/kg ($) Water Setting Water price/kg ($) Water : Lye Ratio Water % of Oil Weight Lye Concentration % : 1 % % Lye concentration = lye ÷ (lye + water) × 100. Common range: 25–40%. Water / Fluid Substitution (optional) Distilled Water (default) Replace % of water Superfat (%) Surfactants (optional) Total Weight: 0 g Total Cost: $— ✕ + ADD ANOTHER SURFACTANT Polyols (optional) Total Weight: 0 g Total Cost: $— ✕ + ADD ANOTHER POLYOL Additives (optional) Total Weight: 0 g Total Cost: $— ✕ + ADD ANOTHER ADDITIVE 🎯 Target Soap Properties (optional) ▲ Enter a target for any property, or pick a preset to fill defaults automatically. Note: ranges shown are for balanced bars — specialty presets (Castile, Laundry, Aleppo, etc.) intentionally fall outside these ranges by design. Quick Preset: PRO — Select a preset — ⚖️ Balanced All-Purpose Bar 🧱 Hard Long-Lasting Bar 🫧 Clarifying / High-Cleanse Bar 🏋️ Sports / Deep Cleanse Bar ☕ Exfoliating Bar ✨ Luxury Conditioning Bar 👶 Baby / Sensitive Skin Bar 🧖 Facial Cleansing Bar 🌸 Extra Sensitive Skin Bar 🌿 Herbal / Natural Bar 🐐 Goat Milk Bar 🫒 Bastille Bar (70%+ Olive) 💧 Pure Castile (100% Olive) 💆 Shampoo Bar (Normal Hair) 🌵 Shampoo Bar (Dry Hair) 💦 Shampoo Bar (Oily Hair) 🪷 Conditioning Hair Bar 🪒 Shaving Soap (Soft) 🪒 Shaving Soap (Hard Puck) 🧴 Liquid Castile Soap 🧺 Laundry Bar 🍽️ Kitchen / Dish Bar 🐾 Pet Shampoo Bar 🏛️ Aleppo Soap 🌍 African Black Soap Style ⚜️ Marseille Soap 🕌 Nabulsi Soap Hardness Range: 29–54 Cleansing Range: 12–22 Conditioning Range: 44–69 Bubbly Range: 14–46 Creamy Range: 16–48 Iodine Range: 41–70 INS Range: 136–165 Longevity Range: 25–60 Clear All Batch Name (Optional) Calculate 🔍 AI-Powered Recipe Optimizer Refine previous blend Download PDF 📄 Download with SOP 💾 Save Batch 🔗 Share Recipe 🌸 Fragrance & Additive Dosage (optional) ▲ Fragrance Oil (3%) % Calculate Dose 📐 Mold Volume Calculator (optional) ▲ Rectangular / Loaf Cylindrical cm inches Fill %: No. of Molds: Calculate Batch Weight ⚖️ Scale Batch (optional) ▲ Target total batch size: g Scale Batch Enter your desired total batch size (oils + surfactants + polyols + additives + lye + water). All ingredients are scaled proportionally using your last calculated batch ratios. 🧪 Chemical Compatibility Checker Check whether your specialty additives & actives are stable at the pH of your selected soap process. Incompatible ingredients are flagged with alternatives. Soap Process Cold Process (CP) — batter pH 10–13.5 Hot Process (HP) — batter pH 10–13.5 Melt & Pour — pH 6.5–8.5 Syndet Bar — pH 5–7.5 Transparent / Glycerin — pH 8.5–11 Liquid Soap (KOH) — pH 9–12 Cream Soap — pH 8.5–11 Shampoo Bar — pH 8–11 Whipped Soap — pH 9–12 Castile Soap — pH 10–13.5 Ingredients to check (one per line, or comma-separated) 🧬 Check Compatibility Clear ⏳ Checking… Database covers brighteners, AHAs/BHAs, enzymes, proteins, preservatives, humectants, actives, colorants, and more. 🔍 Problem Solver Describe what went wrong with your batch: 📷 Add a photo of your soap (optional — helps Alchemist identify DOS, soda ash, separation, etc.) 📸 Tap to upload photo · JPG, PNG, WEBP · Max 5MB ✕ 🔬 Diagnose Formula Analyzes your formula against the problem you described 🤖 Verify by Alchemist Sends your batch ingredients to the AIchemist for a formulation review 📋 Saved Batches ↺ Refresh ⚖️ Batch Comparison Clear Comparison