Results: Clinical tests show that this eye and lash serum makes significant improvement in lash and brow fullness in four weeks. For longer, beautifully shaped and healthy shiny eyelashes and eyebrows! The highly effective EYEZONE CONDITIONING CARE...

As for what ingredients to look for, Geeta Yadav, MD, a board-certified dermatologist and founder of Facet Dermatology recommends keeping an eye out for “a prostaglandin or prostaglandin analog, like bimatoprost in the prescription-strength formula Latisse, or isopropyl cloprostenate, like what you’d find in GrandeLash,” both of which encourages hair growth. Other notable ingredients in a formulation include peptides and amino acids to support brow growth, and hyaluronic acid or vitamin e to hydrate and protect the skin, says Dr. Portela. Otherwise, you'll find that some formulas are often rich in antioxidants, proteins and vitamins including biotin, panthenol, glycerin, keratin, argan oil, green tea extract and vitamin B5.

Results: “There have been published studies on the efficacy ofindividual ingredients used in growth serum formulations,” says Maxwell. According to a 2014 study published in Toxicological Research, peppermint oil may facilitate hair growth if applied topically for four weeks. Similarly, the International Journal of Ethics in Engineering & Management Education demonstrated the effectiveness of coconut oil mixed with certain herbs to promote hair growth in a 2014 clinical study.

How to Apply: According to Province Apothecary, apply the serum morning and night then massage 1-2 drops into brows to boost efficacy.Results: The brand claims that results can be seen within four weeks, but the full effect will take around 12 weeks. Invisible when applied, this product scored almost 100% with our testers in ease of use, design and product instructions. Testers also found the formulation to be a good consistency without feeling too heavy or oily. This premium growth serum might fall at the higher end of your budget, but it aced our lab test for volumising and lengthening lashes.

Why we love it: Ironically, this eyebrow and eyelash growth serum combo from The Ordinary is anything but normal. Thanks to a collection of exclusive technologies, this product will condition brows like a dream, and is perfect for nourishing your natural lashes to create the maximum amount of volume while promoting hair density and length.Usage: Apply to the lashes first, following on to the brows. Use both morning and night for best results How to Apply: According to Twenty/Twenty, apply one pump of serum to the lashes and brows each night. Why We Love It: “This formula contains sunflower oil, biotin, panthenol, and castor oil — all ingredients that support healthy hair growth,” says Hilal-Campo of Augustinus Bader’s new lash serum, which can double as a brow treatment. In a 12-week clinical trial of subjects with self-perceived sensitive skin and eyes, lash length was said to increase by 34%, while lash and brow prominence increased by 130%. On top of the brand’s signature TFC8 complex (basically their version of concentrated nutrition for healthy cells), it provides a dose of moisture. “Hyaluronic acid and aloe help draw moisture into dry lashes,” Hilal-Campo notes. Usage:Apply 1 drop per eyebrow and massage in with circular movements to stimulate blood circulation. Use daily in the morning.

This formula contains SYMPEPTIDE XLASH® complex (with Myristoyl Pentapeptide-17), Anargy® complex (with Oligopeptide-2 and Glycoproteins), Widelash™ complex (with Biotinoyl Tripeptide-1 and Panthenol), REDENSYL™ complex (with Larix Europaea Wood Extract, Camellia Sinensis Leaf Extract, and Zinc Chloride), CAPIXYL™ complex (Acetyl Tetrapeptide-3 and Trifolium Pratense Flower Extract), and High-Solubility Caffeine. Our lab test showed an impressive 7% increase in the length of lashes during the testing period. 70% of testers also noticed an improvement in the fullness of their brows and found that there was more growth in areas where hair was normally sparse. Joey Healy is a celebrity brow specialist. Known for his trendsetting vision and amazing technical skill, Healy is one of the most influential and sought-after eyebrow specialists in the industry. With his skill for crafting the ideal arch, Joey launched his eyebrow empire in 2010 with his signature product line, Joey Healy Eyebrow Collection, following in 2011. In 2012 Joey opened his flagship Fifth Avenue Joey Healy Eyebrow Studio, a stylish eyebrow sanctuary for his jet-setting, unisex clientele. With his popularity rapidly growing, Joey expanded with a new team of brow proteges to a larger NYC location in 2015. Why we love it: Don't let the price tag scare you off – Augustinus Bader is one of the best premium beauty brands around. This eyelash serum features a hyaluronic acid complex, peptide-rich turmeric and biotin, all of which work to revitalise your hair follicles and support natural hair growth.How to Apply: According to Augustinus Bader, this serum is best applied morning and night. Just coat your brow hairs evenly with the wide side of the bristle applicator. How to Apply: According to Dr. Lara Devgan, apply a small amount to clean, dry lashes and brows up to two times per day.