Handcrafting your own Marseille soap offers unmatched advantages over store-bought options. You'll bypass the flood of counterfeits lacking the true cosmetic and dermatological benefits of genuine Marseille soap—a Provençal staple. It's cost-effective, straightforward, and enjoyable, provided you source quality ingredients and follow precise measurements for success.
To qualify as authentic Marseille soap, use at least 72% olive oil: 252 grams. Add 98 grams of coconut oil (or copra). Incorporate 160 grams of 30% washing soda, or alternatively, 48 grams of granulated caustic soda with 112 grams of deionized water—washing soda is safer and quicker for beginners. Start with small batches for testing. Avoid palm oil due to its links to deforestation and social impacts. For fragrance, add essential oils like lavender, vanilla, ginger, cinnamon, star anise, or cardamom. Optionally, mix in a spoonful of matching ground spice.
Safety first: Wear protective eyewear, gloves, and an apron. In a heat-safe container, weigh the olive oil. Melt the coconut oil in a bain-marie, then blend with the olive oil. Measure washing soda (recommended) into a glass container. Allow all to reach room temperature. Slowly stir the soda into the oils until the mixture reaches 'trace' (a pudding-like consistency). Pour into a mold and let set for 24-48 hours before unmolding. Cut into bars if needed. Cure for at least one month to unlock its full benefits.
