Frequentlyasked questions

GENERAL
  • We have 30-day no quibble returns.
  • If you need to return something, please email us at hello@mthk.com with your order number, before sending back the product(s) in their original packaging. We'll arrange the refund using your original payment method. Please allow a few days for your bank or credit card company to process the refund.
  • We currently ship to the EU, US, Canada and the Channel Islands. We use a fully-tracked service. There is an £8.99 shipping charge. Please be aware - you may be liable to a customs charge on international orders. International deliveries usually take 7 days (but can sometimes take up to 21 days).
  • It should be with you within 2-3 working days following the day of order. International deliveries usually take 7 days (but can sometimes take up to 21 days).
  • You can email us at hello@mthk.com, if there's something that you're not happy with. We'll try our best to make it right.
  • Email us at hello@mthk.com.
  • SUBSCRIPTIONS
  • Because we can plan ahead, which helps with our production and shipping. We pass these savings on to you.
  • Yes, login your account and choose 'Skip a month'.
  • Yes. You can log into your account to add anything to your next delivery (as a one-off or as part of your subscription). If you need something before your subscription is due, just add it to your cart as a one-off and check out.
  • You can cancel anytime. No hidden catches. Just log into your account, go the 'Overview' page and click 'Cancel Subscription'.
  • SUSTAINABILITY
  • B Corporations are social enterprises that think about the bigger picture. They have to show they care about more than profits and shareholders and that they actively look after their employees, their community and the environment. Becoming a B Corp isn't easy. The certification covers governance, staff, community, environment and customers. It's a rigorous process and every business has an annual review, so no one can rest on their laurels. We have to show we're a responsible business, giving evidence to prove we've thought about our energy supply, how we manage waste and water, how we look after our staff, what we're doing to be more diverse and how we're being more transparent about our work. We have to show we're here to make a positive and significant impact on people and our planet.
  • We're a member of the SME Climate Hub, which means we've promised to halve our emissions before 2025 and get to net zero before 2030. Net zero means the amount of carbon dioxide we add to the atmosphere is no more than the amount taken away. It's part of the United Nations' 'Race to Zero' campaign. The SME Climate Hub also helps us with the tools and resources we need to develop our climate strategy, measure and reduce our emissions (and those of the suppliers we work with), and learn about carbon offset projects.
  • We’ve teamed up with Ecologi to offset the carbon footprint of our products and shipping. In addition, every time you order from us, Ecologi plants a tree. We've already planted 1,000 trees - in our own Ecologi grove - and we plan to plant many more. We offset everyone at MTHK's future carbon footprint too. This includes the time they spend at work and any business travel, as well as their carbon footprint outside work too. Everyone here is signed up to an Ecologi subscription, which means 12 trees are planted for each person who works at MTHK every month, offsetting 1 tonne of CO2 each.
  • We've put a lot of thought into our packaging to make sure everything we use is sustainable, recyclable or biodegradable. You can compost the pouch our vitamins are in (it decomposes in 3 months). The cartons and boxes we use are made from recycled or FSC accredited paper and printed with eco-friendly ink. And our packaging is sleek enough to fit through your letter box (no giant boxes here).
  • Our suppliers and partners are GMP certified (Good Manufacturing Practice). We work with them to improve what they do and how they do it, so it's better for the environment.
  • EYE VITAMINS
  • Our vitamins won’t interact with any other supplement you’re taking. It's worth knowing that each vitamin gives you 10mg of zinc a day (the UK's recommend upper limit is 25mg a day).
  • It’s always good practice to discuss your diet and supplements with your doctor if you’re also taking prescribed medication.
  • We've added a pure extract of maqui berry, a 'superfruit' that only we use. Maqui berries have been shown to help your eyes produce tears and help the symptoms of dry eye. Our berries are sustainably harvested from the wild forests of Patagonia.
  • There should be no issues if you take the vitamins during pregnancy or breastfeeding, but it's always good practice to check with your health care practitioner.
  • Yes. There should be no issues.
  • Based on the one of the largest clinical studies of eye disease (AREDS2), our formula helps people with intermediate or late AMD (Age-related Macular Degeneration).
  • No.
  • Yes, all ingredients are tested for and only approved for use if they are compliant with the most stringent regulations.
  • No.
  • They're suitable for children from the age of 12.
  • You can take these vitamins if you're vegan, vegetarian or diabetic.
  • Our eye vitamins are made locally (in the UK) by a well established vitamin and supplement manufacturer, with full BRC and GMP accreditation.
  • EYE SPRAY
  • The spray moisturises the surface of the eye with purified water, vitamins and oils (liposomes) that help to protect it against the harmful effects of Dry Eyes. The spray stabilises the tear film and hydrates the eye. It has a lipid that replenishes the oily (Lipid) layer, decreasing the evaporation of tears and helping to heal the harmful effect of Dry Eyes. The oil is soy lecithin, a natural plant extract and a phospholipid that recreates the natural oily layer of the tear film. The spray can be used by anyone and everyone. It can be used by people with all types of Dry Eyes as well as those without Dry Eye who want to hydrate and protect their eyes during the day. The spray does not contain harmful preservatives that cause allergy and irritation. It is easy to use and can be used in people who wear contact lenses as well as those following laser refractive eye surgery without the risk of infection.
  • We’ve added pro-vitamin B5, a natural moisturising agent found in the skin around the eye. This gently hydrates and moisturises the skin around the eyes and eyelids.
  • Our spray has no phosphates or preservatives, just the moisture your eyes need to stay healthy. (Over time, preservatives can cause allergies and irritation.)
  • Close your eyes and spray once or twice onto closed eyelids from about 10cm away. Don't spray with your eyes open or let the nozzle touch your eyes. You can use the spray as often as you like (around 4 times a day is good).
  • If you're wearing makeup, close your eyes and spray from about 20 cm away. Safe to use with contact lenses (it helps make them feel more comfortable too).
  • If you accidentally spray onto open eyes, you'll get a slight burning sensation. This should pass in a few minutes (and not cause any further issues).
  • Our eye spray does not need refrigeration, but you may enjoy using it at a cooler temperature. Put the spray into a fridge for an hour or so before using - for an extra refreshing spray. (Our eye spray should be stored between 2°C and 25°C). The temperature of a regular fridge at home is between 2˚C - 8˚C.
  • Your eyes need a well-formed tear film on the front of your eyes to function in a healthy normal way. Dry Eye is an eye condition caused when you have a problem with your tears and tear film. Anything that affects the makeup of your tear film – for example, if you produce too little or too much of one of the layers – will stop the tear film working properly and potentially cause Dry Eye. Despite the name, having Dry Eye can also make your eyes watery. This is because dry eye causes irritation of the eyes and that in turn makes them watery. Typically, Dry Eye doesn’t cause a permanent change in your vision. It can make your eyesight blurry for short periods of time, but the blurriness will go away on its own or improve when you blink. Although Dry Eye doesn’t usually cause long- term problems with your sight, it’s important to let your GP/healthcare professional know if your eyes are feeling uncomfortable, gritty and sore for an extended period of time. Most of the time, Dry Eye just causes discomfort and may be controlled with the use of eye drops or sprays. Once you have Dry Eye you may always tend to be prone to it. But you will probably find that there are times when it is better than others. Dry eyes can occur in all age groups, but with the increasing use of screens at work, this is becoming more common in younger people. Computer vision syndrome and eye strain at work with prolonged use of screen time are part of the symptoms of Dry Eye. A stable healthy tear film can help prevent this. Medically, Dry Eye is known as keratoconjunctivitis sicca.
  • ‘Dry eye’ is a very common eye condition. It leads to blurred vision as well as tired, red, itchy and aching eyes that just want to close, rather than carry on working. Dry eye can make your eye feel uncomfortable, red, scratchy and irritated. Normally, Dry Eye affects both eyes but sometimes one eye is affected more than the other. Sometimes Dry Eye can make it feel like you’ve got something in your eyes such as an eyelash or a piece of grit, even when there's nothing there. Your eyes may water more than usual.
  • Dry eye is caused by a problem with your tears. You may develop Dry Eye: When there is an absence or reduction in the oily layer (lipid layer) of the tear film. This prevents the ‘sealing in’ of the watery (aqueous) layer of the tear film. Any tears you produce evaporate quickly leaving your eyes dry and uncomfortable. (You feel like you and want to keep your eyes closed). This is the commonest cause of Dry Eyes. If your tears aren’t of the right quality If your tears aren’t spread across the front of your eye properly. Dry Eye is usually more common as people get older. As we age, our eyelids aren’t as good at spreading tears each time we blink. The various glands in our eyes that produce tears may also become less effective. Essentially, the quality of your tear film gets worse with age.
  • Medication: If you’re taking certain drugs, such as antihistamines, antidepressants, pain medications and oral contraceptives, you may develop Dry Eye symptoms. Contact lenses: Using contact lenses can put you at risk of developing Dry Eye. You should follow the advice for wearing contact lenses and look after them carefully. Surgery to the eye or injury to the eye surface: If you have surgery on your eye (for example laser eye surgery) or an accident which affects or scars your eye, you may develop Dry Eye. Your Dry Eye symptoms usually improve once the eye has healed, but this can take time. Blepharitis: Inflammation of the eyelids can in turn give rise to evaporative dry eye. Meibomian gland dysfunction (MGB): This condition happens when the glands lining your upper and lower lids are blocked. You have about 30 of these small meibomian glands on each upper and lower lid located just behind your lashes. These glands secrete oil onto the front of your tears. If too little is produced, the tears tend to evaporate leaving your eyes dry and uncomfortable. Other inflammatory conditions that are associated with Dry Eye are rheumatoid arthritis and Sjögren’s syndrome. (Sjögren’s syndrome is a condition that may cause you to have Dry Eye and a dry mouth).
  • Dry eyes can sometimes be helped by dietary modifications but also a change to the environment and general health can also help ease Dry Eye as well as lifestyle changes. Psychological factors have a role to play in the management of Dry Eye disease. What is good for the heart, is good for the brain, is also good for the eye. Looking after general health and well being has beneficial effects on the eye and vision. The oily layer may be helped by increasing the oily dietary intake and omega oils including flaxseed as well as foods containing omega 3 and 6 (such as oily fish, nuts, seeds, eggs, green leafy vegetables, etc.) Adjust your environment. Lowering the temperature and using a humidifier may help. Central heating and air conditioning can worsen Dry Eye symptoms by encouraging the evaporation of tears. Avoid dusty, windy and smoky areas or use wrap-around glasses when you are exposed to these environments. Take rest periods and remember to blink often when you are using the computer, watching television and reading. Avoid using eye makeup if an infection or inflammation is present. If you wear contact lenses, have regular eye check-ups. You may need a break from wearing contact lenses if your eyes are dry, or explore different types of lenses which may be more suitable for Dry Eye. Other medications and treatments can also help in more severe cases and the advice of an optician or referral to an ophthalmologist (eye doctor) may in some cases be advised.
  • There's no proof that computer use causes any long-term damage to the eyes. But regular use can lead to eye strain and discomfort. You may notice: Blurred vision / Double vision / Tired eyes / Dry Eye / Eye irritation / Headaches / Neck or back pain
  • Enhance your tears and tear film with the use of eye drops and eye sprays. Some other simple changes to improve your symptoms: Cut the glare. Change the lighting around you to reduce the effect on your computer screen. If light from a nearby window or light casts a glare, move your monitor and close the shades. Adjust the overhead lighting if it’s too bright, or use a desk lamp with a moveable shade that casts light evenly over your desk or table. You may also add a glare filter to your monitor. Rearrange your desk. The best position for your monitor is slightly below eye level, about 20 to 28 inches away from your face. You shouldn't have to stretch your neck or strain your eyes to see what's on the screen. Put a stand next to your monitor and place any printed materials you're working from on it. That way, you won't have to look up at the screen and back down at the desk while you type. Give your eyes a break. Follow the 20-20-20 rule. Look away from the screen every 20 minutes or so and look at something around 20 feet away for about 20 seconds. Blink often to keep your eyes moist. If they feel dry, use some eye spray. Tweak your settings. You don't have to live with the factory-installed presets on your screen if you're uncomfortable. Adjust the brightness, contrast, and font size until you find what’s best for you.
  • Dry Eye sufferers may be accustomed to eye drops, which flood the eye with moisture. However, the MTHK eye spray does not work in the same way as a liquid drop. They work at the cause of the problem by helping to repair the tear film to provide effective relief of Dry Eye symptoms.
  • The spray can be used up to 6 months after first opening. The sterile spray mechanism means there is no need to throw the bottle away after 28 days like many other treatments.
  • The bottle is filled generously and will deliver 10ml of spray by volume - which is about 100 sprays.
  • The spray suction pipe has been purposely designed not to touch the bottom of the glass bottle, as this may affect spray performance and pressure. As a result, all bottles have been “overfilled” to ensure that 10ml (approximately 100 sprays) is available to use.
  • Please read the information leaflet inside the eye spray carton before using. Always read the label, use only as directed, if symptoms persist, see your healthcare professional.
  • Understanding the benefits of liposomal eye sprays for dry eye patients European Journal of Ophthalmology: Efficacy of 3 Different Artificial Tears for the Treatment of Dry Eye in Frequent Computer Users and/or Contact Lens Users Comparative study of treatment of the dry eye syndrome due to disturbances of the tear film lipid layer with lipid-containing tear substitutes: Efficacy of lipid-containing tear substitutes
  • - Role of the tear film in the optical quality of the human eye. (Robert Montés-Micó, Journal of Cataract & Refractive Surgery 2007). - The relief of dry eye signs and symptoms using a combination of lubricants, lid hygiene and ocular nutraceuticals. (Ngo W, Srinivasan S, Houtman D, Jones L., Journal of Optometry Jan - Mar 2017). - Computer vision syndrome: a review of ocular causes and potential treatments. (Mark Rosenfield, Ophthalmic & physiological optics: the journal of the British College of Ophthalmic Opticians (Optometrists) - Sept 2011). - Blink rate, incomplete blinks and computer vision syndrome. Portello J, Rosenfield M & Chu C., Optometry and vision science: official publication of the American Academy of Optometry - May 2013).
  • Our eye spray is made under license with a Swiss pharmaceutical company - EC Certificate of Conformity 93/42/EEC and ISO 13485:2016 accreditation.