We spoke to two experts to get valuable insights to inform our selections for this story, including:

Start by gently cleansing your eye area and removing all makeup, sunscreen, and other skincare residues. Gently pat your skin dry, and make sure it's entirely dry before beginning. Using the applicator wand, carefully glide the brush along your upper lash line to apply a thin layer of serum—almost like applying liquid eyeliner. Repeat the process on the lower lash line, and wait for the serum to dry completely before applying anything else. There’s no denying that this lash growth serum is expensive, but the results are noticeable and intense, so we can justify the price tag. Formulated with a blend of peptides, biotin, amino acids, and vitamins, the formula works to strengthen the lashes, protect against breakage, and significantly lengthen the eyelashes.

Caitlyn Martyn is a commerce writer on staff at Byrdie, where she covers beauty and style. She gathered insights and testimonials from our experienced team of editors and in-house lab testers to curate this list of eyelash growth serums. BG’s main job is usually to be a solvent for the other ingredients. Other tasks include helping the product to absorb faster and deeper into the skin (penetration enhancer), making the product spread nicely over the skin (slip agent), and attracting water (humectant) into the skin. Enhanced Lash Length: The primary benefit of using LUXROS Eyelash Growth Serum is the potential for longer and more luscious eyelashes. Many users report visible improvements in lash length, giving their eyes a more dramatic and alluring look. If you have sensitive skin or sensitive eyes, you may hesitate to use a lash serum. However, there are options that may work for you without causing irritation, such as this one, which did not irritate our tester's eczema-prone eyelids. This formula is safe for sensitive eyes, has been ophthalmologist tested, and utilizes the power of amino acids to help fortify the lashes that have been damaged by consistent makeup wearing. Interestingly enough, it claims to minimize the amount of lashes that fall out during the makeup removal process. We love that this formula leaves lashes stronger, softer, and more resilient. Today, Rapidlash, Revitalash and UKLash use a low-dose form of prostaglandin analogues in their serums, supported with conditioning extracts, while the majority of newcomers opt for alternative conditioning ingredients such as peptides and red clover extract instead.

Lash growth serums work by essentially stimulating your eyelash hair follicles and keeping them in the anagen phase (the active/growth stage of the hair growth cycle). Formulas usually contain nourishing and strengthening ingredients, like biotin, peptides, and amino acids as well. Results May Vary: Not everyone will experience the same level of success with LUXROS Eyelash Growth Serum. Individual results can vary significantly, and some users may not see noticeable improvements. Left and right, beauty products are promising consumers the natural lashes of their dreams, but the truth is that most of those products won't work in the long-run or even at all unless you use a prescription product. Independent studies into the effectiveness of eyelash growth serums are sparse, however anecdotal approval is widespread. Many users report visible improvement in the density of their lash line after around four weeks of daily (or nightly) use. Are lash serums safe? Not Suitable for Everyone: Pregnant or nursing individuals, as well as those with certain medical conditions or eye conditions, should consult a healthcare professional before using any eyelash growth serum.Deionized Water, Lactobacillus, Cocos Nucifera (Coconut) Fruit Extract, Glycerin, Propanedio l, Polysorbate 80, Xanthan Gum, Bacillus Ferment, Saccharomyces Ferment Filtrate, Wheat Amino Acids, Soy Amino Acids, Propylene Glycol, Diazolidinyl Urea, Disodium EDTA, Sodium Citrate, Panthenol, Arginine HCI, Serine, Threonine, Myristoyl Pentapeptide-17, lodopropynyl Butylcarbamate, Biotinoyl Tripeptide- 1 A Solution for Enhancing Your Eyebrows Serine is an amino acid that most often comes to the formula as part of a moisturizing complex. It's anon-essential amino acid (meaning that our body can synthesize it) and serves as a water-binding ingredient. Many of the best lash serums also contain a supporting cast of nutrients and vitamins to condition the lashes. Biotin, which helps the body to metabolise protein, is a common addition, as is moisturising panthenol. Are lash serums really effective?

Eyelash growth serums are safe to use and are scientifically proven to be non-irritating. You can also use them even if you have eyelash extensions. Some products also have the bonus of using on your eyebrows, resulting in a fuller, more affluent, and more defined facial profile. LUXOR Eyelash Serum is one of those products that are proven to enhance your eyebrows. The complication is that glutamic acid has twodistinct forms, L-glutamic acid and D-glutamic acid, that are the mirror images of each other (think of it like your left and right hand).Studies show that a topical application of L-glutamic acid on damaged skin delayed skin repair, while D-glutamic acid application sped up skin repair.As both forms are used by the industry, it is a bit uncertain what you are getting with just glutamic acid on the ingredient list(but if it is aShiseido group product, it is probably the goodie D-form:)). While this class of ingredients does help with lash growth, they’re sometimes associated with side effects like darkening and thinning of the surrounding skin and loss of fat in the eye area. If you’re concerned about these side effects, or you do experience them, it’s best to consult with a doctor who can advise you on the next steps. An eyelash growth product should help stimulate the growth of hair of the eyelash," explains Birnur Aral, Ph.D., director of the Beauty Lab at the Good Housekeeping Institute. "For hair growth, a product’s actives must reach the hair follicle, and as such ... should be regulated as a drug." The FDA allows lash growth products to be marketed as both a drug and a cosmetic as long as they comply with the Federal Food, Drug, and Cosmetic Act (FDCA) requirements for both. Are eyelash growth serums safe? Biotin: You’re probably already familiar with biotin in supplement form, which is great for helping the hair and nails grow strong and healthy. Imani recommends looking for lash growth serums that also contain this powerful ingredient to help your lashes grow long and strong, too. Both RapidLash Eyelash Enhancing Serum and RevitaLash Advanced Eyelash Conditioner contain growth-promoting blends of biotin, peptides, and amino acids.Uklash may be a new name, but its already gaining a loyal following for its effective lash-growth serum (which comes in at a surprisingly petite price).