Answering Your Formulation Questions

Here are the answers to your questions regarding fragrance use in formulations:

Cleaning Bottles with Ethyl Alcohol

Yes, you can use Ethyl Alcohol (99.9%, Perfumer Grade) to clean old fragrance smells from bottles, especially glass bottles. However, as mentioned by the staff, fragrance can often penetrate plastic bottles, and alcohol may not be able to completely remove the scent from plastic, although it might help reduce the intensity.

Fragrance Percentage in Liquid Soap and Lotion

The typical starting rate for adding fragrance oil to liquid soap or lotion is 1%. You can adjust this percentage up or down depending on the desired scent strength. To calculate this in grams or milliliters:

• By Weight (grams): 1% means 1 gram of fragrance oil per 100 grams of the total product formulation. For example, in a 500-gram batch of liquid soap, you would add 5 grams of fragrance oil (500 * 0.01 = 5).
• By Volume (ml): If you are working with milliliters, 1% means 1 ml of fragrance oil per 100 ml of the total product formulation. For example, in a 500 ml batch, you would add 5 ml of fragrance oil (500 * 0.01 = 5). Working by weight is generally more accurate in formulation.

Choosing a Rose Fragrance

You are interested in several rose scents for both liquid soap and lotion, looking for a fresh, not overly strong scent. Based on your list and the information available:

• Rose Acetate is a fragrance component, not a finished fragrance oil blend. It is not typically used on its own unless you are formulating a custom scent from individual aroma chemicals.
• Rose Water (Rosa Damascena) is a distilled water product with a natural rose scent, often used as an ingredient itself rather than a concentrated fragrance oil for scenting a product. It can contribute a mild, natural rose note but is not a substitute for fragrance oil if you want a noticeable scent.
• Other options from your list that are likely fragrance oils include Fresh Rose, Rose Blossom, Rose Petal, and potentially Turkish Dried Flower (though the name suggests it might be different). Fragrance preference is very personal, and suitability can sometimes vary slightly between product types like soap and lotion. The best way to find the scent you prefer is to test them yourself.

Making Fragrance Last Longer

To help the fragrance last longer in liquid soap and lotion, you can add ingredients known as fragrance fixatives. The staff recommended using Sugar Fix or Last Fix for this purpose. These ingredients help to anchor the fragrance molecules, slowing down their evaporation and making the scent more stable and long-lasting on the skin or in the product. You would need to check the specific recommended usage rate for Sugar Fix or Last Fix, as this can vary depending on the product.