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If you've been in the market for an affordable, multitasking beauty product, you're in luck! Meet castor oil, the celeb-loved skincare staple that's about to become a part of your daily beauty routine. Not only does the handy oil promote eyebrow, lash, and hair growth, but it also moisturizes skin and helps reduce the look of acne, blemishes, fine lines, and wrinkles. In fact, stars like Charlize Theron and Khloé Kardashian have been fans of castor oil for years-they both use it on their brows, and Charlize swears by it to make her hair thicker. (Related: How to Use Castor Oil for Thicker Hair, Brows, and Lashes)

While castor oil is best known for being a terrible-tasting laxative, you shouldn't worry about using it on your face. New York City-based dermatologist Debra Jaliman, M.D. tells People, "Castor oil is anti-inflammatory and has antibacterial properties, and because it has those awesome properties it is completely safe for the eye area. Castor oil is extremely moisturizing, can stimulate hair growth, nourish hair follicles, and deeply condition your hair." (Yes, please!)

Thousands of Amazon shoppers are already in on this beauty secret-many swear by this castor oil from Kate Blanc Cosmetics not only because it's certified organic, cold-pressed, and hexane-free (three properties Dr. Jaliman says are key), but also because it comes in an amber glass bottle that protects it from harmful UV rays. Even better? The glass dropper helps you quickly and efficiently apply the product to your hair or skin, and the wand and lash brushes let you apply the oil to your lash line and brows with ease.

Plus, it helps that it's a best-selling beauty product on Amazon with an impressive 4.5-star rating and over 3,800 reviews. Hundreds of customers have uploaded photos of their lashes to show how much they have grown since using the product, while others have left rave reviews about how quickly they've seen results. (Related: Kerry Washington Swears This $7 Product Made Her Eyelashes Healthier)

One happy shopper wrote, "I've always read that castor oil was great for hair growth so I decided to give it a try. I've been using it on my eyebrows, lashes and on my hair and in a month I can already tell a difference. My eyebrows seem much thicker, my hair is so soft and thick, and healthy. My lashes are looking thicker and longer. I also use this on my skin."

"Love this oil, I apply to my skin and it is so soft and smooth and my wrinkles are diminishing. I also use it on my hair and it has significantly shown improvement and looks healthy again. It was damaged from highlighting and bleach and now is so healthy and soft again," raved another. (Related: This Anti-Aging Serum Has More 5-Star Reviews Than Any Other Skin-Care Product On Amazon)

While castor oil is generally regarded as safe, like all beauty products some people may have allergic reactions from using it. So we recommend testing it on a small area of your skin before applying to your lash line or face. But at less than $10 a bottle, it won't cost much to give it a try.

Photo: Amazon

Buy It, Kate Blanc Cosmetics Castor Oil, $10,

Each product we feature has been independently selected and reviewed by our editorial team. If you make a purchase using the links included, we may earn commission.

This story originally appeared on by Rebecca Carhart.