Yes. Like all the top Lash Serums in NZ, fLash contains a type of Prostaglandin which is a conditioning agent for the lashes. The type of prostaglandin used in fLash only supports locally where it is applied. Unlike hormones, Prostaglandins are only produced locally where they are needed and have a short life span (they’re quickly broken down).

Flash contains a Prostaglandin not a Hormone.

fLash was designed simply to be the most safe and affordable eyelash conditioning serum available. Created by a medical doctor, fLash has also been ophthalmologist tested and is safe for sensitive eyes and for use with contact lenses.

Each tube of fLash contains 2mls of lash serum which is a full 3-month supply.

After your product is open, it will last 9 months with no degeneration of impact. If your product is unopened, it will last 3 years. The active ingredient will not be effective after 3 years.

For any further queries please contact us at:

Like many serums and cosmetics, fLash has not been tested on pregnant or breastfeeding women. We like to take a conservative approach, and although fLash does not contain any harsh chemicals or hormones and only acts locally (at the lash follicle ), we recommend that if you want to use it you should consult your physician before use.  

It is not recommended to use fLash during chemotherapy, however many people turn to fLash to help support and enhance their lashes after their treatment is finished.

Flash is safe to use on brows, however it formulated specifically for use on lashes. The skin around the brow area is thicker than the skin around the lash line hence why there are different serums on the market for both areas. We have many customers who have successfully used Flash on their brows, however individual results may vary.

Some people may experience mild side effects which should resolve when you stop using the product. 

Do not use if mild or moderate redness occurs, discontinue use or at least stop temporarily until symptoms resolve.

If severe swelling, redness, pain or change in vision colour occur, discontinue use and consult a physician. 

For any further queries please contact us at:

fLash Eyelash Serum has a 90 day money back guarantee. If you are not 100% satisfied with the product in the first 90 days you can return it to the place of purchase for a full refund or replacement. For the guarantee to be valid Proof of Purchase is required, the product must be returned and the claim must be made within 120 days of purchase.  

If purchased from this website simply contact us at to arrange your return / replacement. Once we’ve received the empty tube and/or any unused product to us we will issue a replacement / full refund via the original payment method. Please note that cost of shipping the return back to us must be paid by the customer.  

No. Sunken eyes (fat atrophy) is a possible side effect of Bimatoprost, which is used in long term, higher concentration glaucoma treatments. Flash does not contain Bimatoprost.

Water/Aqua, Hydroxyethylcellulose, Glycerin, Panthenol, Hydrolyzed Soy Protein, Butylene Glycol, Carbomer Polysorbate20, Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide-7, Sodium Hyaluronate, Soluble Collagen, Dehydrolatanoprost, Hydrolyzed Wheat Protein PG-Propyl Silanetriol, Disodium EDTA, Phenoxyethanol, Ethylhexylglycerin.

Water (Aqua), Butylene Glycol, Synthetic Beeswax, Acrylates Copolymer, PVP, Copernicia Cerifera (Carnauba) Wax, Sucrose Polystearate, Stearic Acid, Behenyl Alcohol, Silica, Triethanolamine, Polysorbate 80, Phenoxyethanol, Hydrolyzed Keratin, Magnesium Aluminum Silicate, Sorbitan Sesquioleate, Squalane, Caprylyl Glycol, Glycerin, Ethylhexylglycerin, Hexylene Glycol, Aloe Barbadensis Leaf Extract, Sodium Dehydroacetate, Disodium EDTA, Urea, Laureth-21, Saccharide
Hydrolysate, Alanine, Glycine, Magnesium Aspartate, Diethanolamine, Creatine, Citric Acid, Sodium Benzoate, Sodium Sulte, Potassium Sorbate.May Contain + / - : Iron Oxide (CI 77499)

How to apply - Step 1.


Apply fLash in the morning to clean dry skin.



Wipe excess serum off the tube (a little goes a long way). Apply one swipe of fLash to the upper lash line, like a liquid eye line

How to apply - Step 3.


Wait 2 minutes for the serum to dry before applying any other products to the eye area. You should start seeing full results in 8-12 weeks, depending on your lash cycle.

A single application stroke is all you need for best results.  For sensitive eyes, apply every other day during the first week.  Individual results may vary.


Ophthalmologist tested, safe for sensitive eyes, eyelash extensions and contact lens wearers. Vegan and cruelty-free.


Top rated Beauty product as shown on Beauty Review NZ. See changes in weeks and full results in 8-12 weeks*


Customer satisfaction is our greatest priority which is why we stand behind our products with a 90 day satisfaction guarantee.