Castor Oil Lash Serum
A two oil blend where castor oil coats each lash with a heavy shine, jojoba oil thins it enough to apply neatly, and a drop of vitamin E keeps the mix fresh.
You will need
- 1 tsp castor oil
- 1/2 tsp jojoba oil
- 1 drop vitamin E oil
- disposable spoolie wands
The ritual
- Sterilise a small dropper bottle with boiling water and let it dry completely.
- Pour in the castor oil, jojoba oil and vitamin E, then cap it and shake.
- Remove all eye makeup and let the skin dry fully before you start.
- Dip a fresh spoolie, blot off the excess, and stroke it along the lashes themselves from mid-length to tip.
- Use one wand per night and bin it afterwards, never dipping a used wand back in.
Why these ingredients
- 1 tsp castor oil
- Thick and clinging, it coats each lash and gives that dark, glossy look. Its weight is also why it needs thinning to be usable.
- 1/2 tsp jojoba oil
- Thins the castor oil so it spreads in one clean stroke rather than gumming, and it sits lightly on the lash line.
- 1 drop vitamin E oil
- An antioxidant that slows the oils turning rancid, which matters more than usual for anything used this close to the eye.
- disposable spoolie wands
- The safety part of the recipe. A fresh wand each night keeps bacteria out of the bottle and away from your eye.
Easy swaps
- 1 tsp castor oil → sweet almond oil if castor feels too heavy, though the glossy effect is milder.
- 1/2 tsp jojoba oil → squalane or grapeseed oil, both light and unlikely to sting.
- 1 drop vitamin E oil → leave it out and simply make smaller batches more often.
- disposable spoolie wands → a cleaned mascara wand, but only if you wash it in hot soapy water and dry it fully.
Keep it clean
Mix with freshly washed hands and clean, dry bowls and spoons. If a recipe is stored, use a jar or bottle washed in hot soapy water and dried completely, and never dip wet fingers into the batch.
Storage & when to let go
Keeps three months in a dark, sealed bottle at room temperature. Make small amounts, since anything used this close to the eye should be fresh.
What to expect — honestly
Lashes look darker, glossier and less brittle within a couple of weeks, and mascara goes on more smoothly over them. That is a coating on the outside of the hair. It does not grow lashes, and the only things that reliably do are prescription treatments from a doctor.
Common questions
Will this make my lashes grow longer?
No. Castor oil coats what is already there, so lashes look darker, glossier and less brittle. Length and thickness are decided by the follicle, not by oil.
Can I use it on my brows?
Yes, and it is easier there since you are further from the eye. Use a separate wand and the same rule of one stroke, then throw it away.
This recipe is shared for general cosmetic enjoyment, not medical advice — see how we research and write in our editorial policy and the full safety guide.
