How do percentage % recipes work?
It's quite simple really - it's all about weight. A set of precise weighing scales is essential for this, especially when dealing with smaller quantities.
If you're making 100g/ml of a product, 1% = 1g/ml
If you're making 25kg/l of a product, 1% = 250g
In both instances above, the final product will be identical. At Aromantic, whenever we make products, whether they be for resale, on our courses, or in-house to test out recipes, we always weigh every single ingredient - including water - as it allows for the most accuracy.
Working in percentages is important when it comes to sensitive ingredients such as preservatives or essential oils. In some instances, you shouldn't use more than X amount of an ingredient in a final product - this amount will be a percentage of the total ingredients, so working in percentages means that you'll never accidentally use too much or too little of a product.