Long, fuller-looking eyelashes can make the eyes appear brighter and more defined, which is why lash serums and growth treatments have become so popular. But you don’t necessarily need an expensive beauty product to give your lashes some extra care.
A simple routine using two common household ingredients—petroleum jelly and a small amount of coconut oil— can help condition the lashes and keep them from becoming excessively dry or brittle.
It is important to understand, however, that this routine cannot guarantee new lash growth in seven days. Eyelashes have their own natural growth cycle, and noticeable changes generally take much longer than a week.
The Two Ingredients
1. Petroleum Jelly
A tiny amount of plain petroleum jelly can help create a protective barrier that reduces moisture loss.
When used carefully around the eyelashes, it may make them look smoother, darker, and more defined simply because the hairs are coated and conditioned.
2. Coconut Oil
Coconut oil is commonly used as a hair-conditioning ingredient. A very small amount can help moisturize the lash hairs and reduce the dry, brittle feeling that may contribute to breakage.
It should never be placed directly into the eye.
How to Try This Lash-Care Routine
Before using anything around your eyes, make sure your face and hands are clean.
Step 1: Remove all eye makeup completely.
Step 2: Wash your hands thoroughly.
Step 3: Take an extremely small amount of plain petroleum jelly and, if desired, mix it with a tiny drop of coconut oil.
Step 4: Using a clean disposable cotton swab or clean lash applicator, apply only a very thin layer to the lash hairs.
Step 5: Keep the product away from the inside of your eye and avoid applying it directly along the waterline.
Step 6: Leave it alone rather than repeatedly rubbing or touching your eyes.
You can follow this type of conditioning routine for several days, provided your eyes and surrounding skin remain comfortable.
What Can You Realistically Expect in 7 Days?
This is where many viral beauty tips become misleading.
You probably won’t suddenly develop dramatically longer eyelashes in one week. Eyelashes grow according to a natural cycle, and hair growth takes time.
What you may notice is that your lashes look glossier, darker, smoother, or slightly fuller because they have been conditioned and coated.
If your lashes have been dry or are breaking easily, reducing unnecessary rubbing and makeup-related damage may also help them maintain their appearance.
Avoid These Common Mistakes
Because the eyes are extremely sensitive, more is not better.
Never:
- Pour oil directly into your eyes
- Apply large amounts of product
- Use dirty mascara wands or applicators
- Share lash applicators with another person
- Apply products over an active eye infection
- Continue using a product if it causes burning, redness, swelling, or itching
- Use essential oils near the eyes without appropriate professional guidance
If a product accidentally gets into your eye and causes significant irritation, rinse the eye with clean water and seek medical attention if the irritation does not settle.
Simple Habits That May Help Your Lashes
The most useful lash-care habits are often surprisingly simple.
Remove eye makeup gently instead of aggressively rubbing the eyelids. Avoid repeatedly pulling at lashes, and replace old eye makeup according to the manufacturer’s recommendations.
A balanced diet that provides adequate protein, vitamins, and minerals also supports normal hair growth throughout the body.
If your eyelashes suddenly become very sparse, fall out in patches, or continue thinning without an obvious reason, it is better to speak with a healthcare professional rather than relying solely on home remedies.
The Bottom Line
A two-ingredient lash-conditioning routine can be an inexpensive way to care for your eyelashes, but it should not be presented as a guaranteed seven-day growth treatment.
Healthy-looking lashes come from gentle care, minimizing breakage, and giving the natural lash cycle time to work. And when anything is used near the eyes, safety should always come before dramatic beauty claims.