MySweetSmile’s Black Friday sale is the perfect excuse to upgrade your smile

You could have whiter teeth by the weekend, let alone Black Friday. (Picture: Metro/MySweetSmile/Getty) Metro journalists select and curate the products that feature on our site. If you make a purchase via links on this page we will earn commission – learn more Black Friday is no longer a single day of deals any more, it’s now a month-long marathon. If you go in without a plan, you’ll end up with a basket full of things you didn’t need. This year, Black Friday falls on November 27, with Cyber Monday on November 30, but many brands and retailers start cutting prices weeks earlier. The best way to navigate the sales without getting caught out is to buy items you already need, rather than panic-buy at the last minute. Teeth Whitening Powder The MySweetSmile Teeth Whitening Powder is a gentle whitening treatment designed to help lift stains caused by coffee, tea and red wine while polishing the surface of the teeth. Formulated with ingredients including papain, bromelain and hydroxyapatite, it works to brighten teeth, smooth enamel and support a cleaner-looking smile. To use, simply dip a wet toothbrush into the powder, brush for two minutes and rinse. One jar is designed to last up to six months, making it a cost-effective alternative to more expensive whitening treatments. Buy Now FOR £24.99 (WAS £29.99) One sale we’ve got our eye on is MySweetSmile, a teeth-whitening brand with thousands of rave reviews from shoppers. Its Teeth Whitening Powder is designed to break down deep-set stains left by years of coffee, tea, and red wine, using a formula of papain, bromelain, hydroxyapatite, and a fine polish to lift plaque, smooth enamel, and leave teeth whiter and brighter. Dip a wet, clean toothbrush into the powder, brush for two minutes, then rinse. Use it once a day for two weeks, then twice a week; one jar lasts six months. Get a brighter, whiter smile easily. (Picture: Metro/MySweetSmile) If it’s been on your radar, or you’re looking to whiten your teeth without spending thousands in a clinic, its Black Friday sale is worth knowing about. The discounts work in stages. From November 1 to 5, it’s running a buy two get one free offer, then its early-bird Black Friday deals kick in from 6 to 15 November, where you’ll find up to 58% off. During that time, the Teeth Whitening Powder will be £20.99, down from £29.99, and three jars will work out to £41.98, which is 53% off. Ask Metro Use AI to go deeper into the stories you care about – powered by Metro and trusted publications. Then from November 19 to 30, that offer will rise to a huge 64% off its teeth whitening powders, serums and strips. It’s the brand’s biggest discounts of the year, and free next-day delivery starts from orders of £50 and over, down from the usual £60 threshold. Hyaluronic Gum Serum The MySweetSmile Hyaluronic Gum Serum is a leave-on treatment designed to soothe, hydrate and support healthy gums. Formulated with 3% hyaluronic acid, alongside ingredients such as panthenol and xylitol, it helps tackle tenderness, inflammation and bleeding gums while promoting a healthier-looking gum line. Simply apply it to your gums before bed and leave it to work overnight, with no rinsing required. It's a simple addition to your oral care routine, particularly if you experience sensitive or irritated gums. Buy Now FOR £24.99 (WAS £29.99) Better still, between November 27 and 30, orders over £30 come with a free Mystery Gift worth up to £29.99. But it’s not just the powder worth adding to your basket. The Hyaluronic Gum Serum is ideal if you struggle with sore, tender or inflamed gums. The formula contains 3% hyaluronic acid along with panthenol and xylitol, which help reduce bleeding gums by hydrating the gum tissue, and can be applied nightly with no need to rinse. Teeth Whitening Strips The MySweetSmile Teeth Whitening Strips are a fuss-free whitening treatment designed to help reduce the appearance of stains and brighten your smile from home. The 14-day treatment involves wearing the strips for 30 minutes a day, making them an easy option for anyone looking to tackle discolouration caused by everyday habits like drinking coffee, tea or red wine. With no messy gels or complicated steps involved, they're a convenient addition to your oral care routine, especially if you're looking to freshen up your smile ahead of party season or a special occasion. Buy Now for £19.99 (was £39.99) Then, if you love the convenience of classic Teeth Whitening Strips, its 14-day course has got you covered. There’s no mess involved, just pop them on for 30 minutes a day and see any stains fade. If you’re self-conscious about your teeth stains, or simply want to start prepping for party season, MySweetSmile’s Black Friday sale is the perfect opportunity. Just make sure to avoid waiting until the last minute as Cyber Monday is your final chance before prices go back up. Speaking with Dr Tim Bradstock-Smith, BDS , AACD , BACD Cosmetic Dentist from London Smile Clinic, I asked him some important questions when it comes to whitening your teeth at home. Dr Tim Bradstock-Smith gives Metro the low-down on the best products and practise when it comes to teeth whitening. (Picture: Metro/London Smile Clinic) What is the safest way to whiten teeth? The best option is dentist-supervised whitening. At The London Smile Clinic, we use most of the leading brands such as Zoom, boutique and enlighten whitening. It is the safest and most effective, especially in the UK where peroxide levels are regulated. A good alternative is dentist-provided take-home trays. Gentle maintenance whitening toothpaste for surface stains can also be used on a day-to-day basis (won’t dramatically change colour). To keep your teeth white, avoid lemon juice, charcoal scrubs, or strong DIY peroxide mixes , they can damage enamel. If you do want noticeable results without harming your teeth, go through a dentist. How white can teeth realistically get? Most teeth can lighten 2–8 shades, depending on your starting colour and the method used. Teeth aren’t meant to be paper-white. Healthy natural teeth are usually slightly off-white or ivory. Professional whitening can make teeth noticeably brighter, but still natural-looking. To obtain a very bright ‘Hollywood white’: That’s often veneers or crowns, not just whitening. Stain type does matter too; Yellow tones respond well, whereas grey or internal staining is harder to fix. You can get significantly whiter, but not artificial, glowing-white unless you change the surface (like with veneers). Brush, rinse, floss and whiten. (Credits: Getty Images) How long do teeth whitening results last? Typically 6 months to 2 years. Results fade faster with coffee, tea, red wine, or smoking. Good oral hygiene and occasional top-ups make it last longer. Is dentist‑led whitening better than at‑home kits? Dentist-led whitening uses stronger, controlled gels and professional checks, so results are more reliable and risks (sensitivity, gum irritation) are lower than most at-home kits. Does tooth whitening damage enamel? No, properly professional whitening does not damage enamel. Overuse or very strong DIY products can cause temporary sensitivity, but true enamel damage is rare when used correctly. Professional whitening from the dentist is always the best. (Credits: Getty Images) What side effects should I expect from whitening? Common side effects are temporary sensitivity, gum irritation, or patchy colour, usually mild and short-lived. How can I reduce sensitivity when whitening my teeth? To help reduce tooth sensitivity during whitening, it’s useful to start using a desensitising toothpaste containing potassium nitrate for one to two weeks before treatment and continue using it throughout the whitening process. It’s also important to space out your whitening sessions rather than applying the product every day, as this gives your teeth time to recover. Try to avoid very hot or very cold foods and drinks while whitening, as these can increase sensitivity. If needed, you can switch to a lower‑strength whitening product. If sensitivity becomes strong or lasts for more than a few days, it’s best to pause treatment and speak with a dentist. Why do my teeth look patchy after whitening? It’s common for teeth to look patchy or uneven after whitening, and there are a few reasons this can happen. Some areas of the enamel may have built up more stains than others, so they whiten at different speeds. Teeth can also become temporarily dehydrated right after whitening, which makes them appear blotchy until they rehydrate. Natural variations in enamel, such as white spots, can also look more noticeable during the whitening process. These effects usually even out within a few days; however, if the patchiness persists, it’s a good idea to see your dentist for advice. There are plenty of at-home kits that will give you whiter teeth in weeks. (Credits: Getty Images) Is whitening safe if I have fillings or crowns? Whitening is generally safe even if you have fillings or crowns, but it’s important to know that these restorations will not change colour. Only natural tooth enamel responds to whitening treatments, so any existing fillings, crowns, or veneers will stay the same shade. As a result, they may appear darker or more noticeable after your natural teeth become lighter. For the best cosmetic result, it’s usually recommended to complete whitening first and then replace or adjust any visible restorations so they match your new shade. Can whitening remove brown stains and deep discolouration? Whitening can be effective at lightening brown surface stains, especially those caused by tea, coffee, red wine, and smoking. However, deeper or intrinsic types of discolouration—such as grey tones, staining caused by trauma, or marks related to certain medications—often do not respond fully to whitening alone. In these cases, alternative cosmetic treatments like veneers or composite bonding may be needed to achieve the desired result. Dr Tim Bradstock-Smith in action at London Smile Clinic. (Picture: Metro/London Smile Clinic) Why do some teeth whiten faster than others? It’s normal for some teeth to whiten more quickly than others, and several factors influence this difference. Yellow‑toned stains typically respond faster to whitening than brown or grey discolouration. Teeth with thinner enamel may show results more quickly, while thicker or denser enamel can take longer. The position of the tooth also plays a role: front teeth often lighten sooner than canines, which tend to be naturally darker. Additionally, any previous dental work, such as fillings or crowns, will not whiten at all. Individual factors like your enamel composition and the strength of the whitening product can also affect how quickly each tooth responds. 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