Apricot and sunflower oil are good carrier oils for normal skin types. You can use two carrier oils if you want to (i. e. if you want the acne-fighting power of grapeseed oil and the moisturizing properties of avocado oil). Just use half of each in your recipe, rather than the full amount of one.
Choose patchouli, rosemary, or tea tree oil for oily or acne-prone skin. Frankincense, jasmine, and sandalwood oil are good for dry or sensitive skin. Geranium and lavender essential oils are good for all skin types. Test a small amount of each oil on a different part of your skin. If your skin starts to burn, sting, or turn red, you may not not want to use that oil. If you are pregnant, talk to your doctor before using essential oils.
Small amounts (under 30 grams (1. 1 oz)) will cost around $5, while larger amounts can cost anywhere between $10 and $20. Store extra powder in a sealed plastic bag or container, and place it in a cool, dark, and dry location.
You can also use vegetable glycerin as a solvent, but you’ll have to heat it to about 100 °F (38 °C) in a double boiler before adding the salicylic acid. This will ensure that the powder dissolves completely.
Try to achieve the consistency of toothpaste. If it’s too dry, add more propylene glycol. If it’s too runny, add more salicylic acid.
A serum that has a pH between 4 and 5. 5 may provide a gentle exfoliation to your skin. If the pH is below 3. 5, do not use it. This will be too acidic for your skin. You might end up damaging your skin.
You can use the serum every day after washing your face, but do not apply it more than twice a day.
Don’t use the serum anywhere that your skin is already irritated.
Apply the serum first, then allow it to dry for a minute or two before applying sunscreen.
