Utilizing dried rosemary for soap-making can yield a fragrant and skin-nourishing product, offering both practical benefits and a delightful herbal aroma. While the process may seem complex, it can be simplified by following a systematic approach. This guide outlines the steps involved in preparing rosemary-infused soap, from infusion preparation to soap recipe calculation and execution.
Preparation and Infusion:
- Prepare the Rosemary: Wash or hose the fresh rosemary bush to remove any dust. If necessary, conduct this step a day or two before harvesting to ensure the plant is dry.
- Harvesting: Gather an appropriate amount of rosemary for your recipe. For dried rosemary, a smaller quantity is needed compared to fresh.
- Infusion Initiation: Warm your oils and rosemary using a double boiler or similar method. Heat the mixture to around body temperature or slightly higher (approximately 40°C/100°F).
- Record Oil Amounts: Before proceeding, accurately weigh and record each portion of oil used for the infusion. This information will be crucial for calculating the soap recipe.
- Straining Process: After allowing the infusion to sit overnight, strain the oil into a separate container using a cloth-lined colander. Be sure to weigh the container before straining to determine the oil’s weight accurately.
Calculation Process:
- Percentage Calculation: Determine the percentage of each oil used in the infusion. Divide the weight of each oil by the total starting oil amount and multiply by 100.
- Total Oil Weight: Weigh the container and strained oil together, then subtract the container weight to obtain the total oil weight for the soap recipe.
- Soap Recipe Formulation: Utilize a soap calculator to develop the recipe based on the total oil weight, water amount, superfat percentage, and optional additives such as sugar syrup and essential oils.
Soap Making Process:
- Mold Preparation: Line your soap molds with non-stick baking paper using your preferred method.
- Batter Division: Calculate and pour half of the soap batter into each mold. If desired, add essential oils to one half of the batter for scent enhancement.
- Insulation and Curing: Insulate the soap molds and allow them to cure for 8-12 hours. After this initial period, check the hardness of the soap before cutting. Ideally, the soap should be cut within 24 hours.
- Curing Period: Cure the soap for six weeks, conducting a pH test before initial use to ensure full saponification and mildness.