When it is melted, take it off the heat so that it starts to cool slightly. At this point, add any other ingredients that you may wish. If you are adding colours, add WB (water based) or NWB (non water based) colours a few drops at a time and stir thoroughly to get the even shade you want. Try mixing colours together to get different shades.
Pearlescent Mica powders may be added if pre mixed with a little glycerin first, for a luxury sparkle.
Now add any fragrances or essential oils that you want and make sure they are stirred in gently but thoroughly.
If you are adding textures, you can add exfoliants such as Bamboo Powder. Whole or ground oats may be added both for texture, decoration and its soothing properties.
Some petals such as rose or lavender turn ugly brown if incorporated into the soap base so it is best to avoid adding these to the body of the soap. Calendula is an exception, however, and retains it’s natural beauty whether used on the surface or within the soap. Remember to add and stir in any extras slowly to avoid adding air bubbles to the melted soap base.
Pour your soap into a large mould for slicing later or into individual moulds. Tap the mould gently to knock out any air bubbles. If you don’t have any purpose made soap moulds you could try pouring the melted soap base into ice cubes moulds which come in many fun shapes.
If you are adding herbs or flower petals, sprinkle over the surface now and press down gently. Leave to cool and harden up.
As soon as the soaps have hardened completely, turn them out of the moulds and wrap immediately as this soap has such a high glycerin content it attracts moisture to itself and can become sweaty if left open to the air. Store in a cool, dry and dark place until wanted. Should your soaps not release easily from the moulds you can cover them with cling film and place them in the fridge for a few minutes before turning them out.
Remember to drain your soap between uses as leaving it in a puddle of water will cause your soap to become slimy and not last as long.