Cosmetic companies market pencils, gels, and other products that can help make your eyebrows look thicker. But is there a way to grow thicker eyebrows without relying on makeup?

Whether you have hair loss or just naturally thin brows, if you want thicker eyebrows, there are numerous home remedies you can try. See what the research has to say.

Coconut oil has been increasing in popularity as both a cooking oil and a dietary supplement. It’s also touted as beneficial to the hair and skin when used topically.

While the oil has been studied extensively for general health concerns, such as weight loss and dementia, there is no widespread scientific data backing up the use of coconut oil to increase hair thickness.

Still, the buzz about coconut oil for hair health continues in the natural health market. To use coconut oil on your eyebrows, simply warm up a small amount of oil in your hands and massage it into the eyebrow area. You can leave the oil on overnight and wash it off in the morning.

Like coconut oil, tea tree oil can purportedly stimulate eyebrow growth and thickness by creating a moisturizing barrier for cellular and follicular health.

Historically used for cuts and other injuries, tea tree oil is used as a skin treatment. It’s available in numerous over-the-counter products, but you can also find tea tree oil extracts to apply directly to your eyebrows.

To use it, apply daily to your brows and leave on overnight. The oil may cause an allergic reaction called dermatitis in some people. Before using tea tree oil for your eyebrows, test the product on a small area of your skin, such as your arm.

While tea tree oil may be lauded as an alternative treatment for growing thicker eyebrows, there aren’t any scientific studies that back up these claims.

As the National Center for Complementary and Integrative Health (NCCIH) reports, few studies have been conducted in humans. Of these, the only promising outcomes for tea tree oil include treatments for acne and fungal infections.

Lavender oil is perhaps best known for its calming effects. When applied topically, it’s also thought to combat hair loss.

Massage lavender extracts into the brow area daily for a relaxing ritual. You should never take lavender orally, as it can be poisonous. If you have allergies, you should also test the oil on another part of your skin. The product can cause rashes in some people.

In terms of scientific studies, lavender seems to show promise only in treating stress. While not generally considered harmful as a hair loss treatment, no quality studies back up the effectiveness of this usage.

Saw palmetto is a supplement that’s sometimes used to treat hair loss. Some people eat the berries, while others use extracts, capsules, or tea. These forms are taken daily as oral supplements. Saw palmetto usually isn’t applied topically.

While saw palmetto has been studied extensively for prostate problems and urinary tract infections, the NCCIH notes that few studies exist for other uses. This means that research about the safety and effectiveness for eyebrow hair growth is limited.

In some cases, achieving thicker eyebrows may simply be dependent on proper grooming techniques. Be sure you follow these tips:

  • Avoid overplucking your brows.
  • Always remove unwanted hairs in dull lighting only. Working in bright lighting tends to lead to overplucking.
  • Avoid pressing too hard on the area with brow pencils.
  • Brush your eyebrows with an eyebrow brush or spoolie daily.

After several weeks, good grooming habits will likely pay off. If you still aren’t seeing results, talk to your dermatologist about more intense interventions.

Surgical grafting may be used in cases of significant hair loss or follicle damage. This method is recommended for cases of trauma or widespread hair loss.

While most of these remedies aren’t considered harmful, the jury’s still out in terms of their effectiveness.

Overall, there is little evidence to support home remedies as treatments for thin eyebrows. As the NCCIH explains, most studies of this nature have been limited, with many of them not including human subjects.

Another consideration is understanding the cause of thinning eyebrows. Some people have naturally thin eyebrows.

If you notice sudden thinning of your eyebrows, however, it could indicate an underlying medical condition that may require treatment. Consider seeing your doctor if you notice sudden hair loss or rashes around your eyebrows.