woman applying mascara

DIY Lash and Brow Serum

This combination makes a good brow and lash serum due to the properties of the ingredients:

  1. Castor Oil: Castor oil is rich in fatty acids, particularly ricinoleic acid, which has moisturizing and nourishing properties. When applied to the eyebrows and eyelashes, it can help hydrate the hair follicles, promote hair growth, and strengthen the hair strands, leading to thicker and healthier-looking brows and lashes.
  2. Lavender Essential Oil: Lavender essential oil is often used in haircare products for its calming and soothing properties. It can help reduce inflammation and irritation on the skin around the eyebrows and eyelashes, promoting a healthier environment for hair growth. Additionally, its gentle aroma may provide a relaxing experience during application.
  3. Cedarwood Essential Oil: Cedarwood essential oil is optional but can be beneficial due to its astringent properties, which may help balance oil production on the skin. This can be particularly useful for individuals with oily skin or those prone to clogged pores around the eyebrows and eyelashes. Additionally, its grounding scent can complement the lavender oil, providing a pleasant fragrance.
  4. Pure Vitamin E Oil: Vitamin E oil is a powerful antioxidant that can help nourish and protect the hair follicles and skin. It may promote hair growth and strengthen the hair strands, leading to thicker and more resilient brows and lashes. Additionally, it can help moisturize and condition the skin, keeping the delicate areas around the eyes healthy and hydrated.

Overall, this blend combines moisturizing, nourishing, and soothing ingredients that can support the health and appearance of brows and lashes. However, as with any skincare or haircare product, it’s essential to do a patch test and monitor for any adverse reactions, especially around the sensitive eye area.


  • 10 ml empty mascara tube with wand
  • castor oil
  • 1-3 drops lavender essential oil
  • 1-3 drops cedarwood essential oil optional
  • Optional: add a few drops of pure vitamin E oil for a boost


  • Add essential oils and vitamin E to the empty mascara tube
  • Top off with castor oil, filling just shy of the top to leave room to reinsert the wand
  • Twist cap back on, and tilt gently back and forth to combine ingredients
  • Use nightly by brushing onto eyebrows or lashes, taking care not to get in your eyes

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