Mascara is a crucial element of many a make-up bag - but can mascaras really deliver on their promises of longer, fuller, or curlier lashes? Listener Kath got in touch to ask exactly that. She also wants to know if you pay more for mascara, do you get better results? How should we remove it - and what about waterproof products that are tough to take off? Are we potentially damaging our lashes? Greg Foot sets his sights on investigating by recruiting some regular mascara wearers to try out differ...
Mar 23, 2023•26 min
Do toothpastes promising to repair enamel and help with sensitive teeth really work? We've all been there - you go down the supermarket aisle to grab toothpaste and suddenly you’re faced with an ocean of the stuff, all promising to do different things. Buzz-phrases like ‘protect’ and ‘repair’ all vie for your attention. But just what are the ingredients in all these different toothpastes? And do they live up to the marketing hype? In this episode we hear from three listeners keen to find out: Be...
Mar 16, 2023•26 min
Sleep is never more important than when you aren’t getting any. And there’s a large range of night time teas, herbal tablets and relaxing oils and sprays that promise to help you get some. But can they really deliver? Listener Corrine got in touch after struggling with her sleep post menopause, wanting to know if there was any evidence to back up the claims of various natural sleep aids. Can they give her the restful night’s sleep she craves – or is it just a waste of money? She sets Greg Foot t...
Mar 09, 2023•27 min
We spend a lot of time on them so it’s important to get the right mattress. But buying one can be confusing. Some use springs while others are made out of foam - or there’s a combination of both. Then there’s memory foam, with brands like Tempur claiming to make their mattresses out of ‘proprietary’ material. And can a good mattress help to alleviate back pain? These are the questions keeping listener Stephen up at night and he tasks presenter Greg Foot with finding out more. Greg speaks to expe...
Mar 02, 2023•27 min
After the Sliced Bread episode on shampoo, a number of listeners got in touch to request a follow-up episode on conditioners. So of course, we obliged. Listener Katie wanted to know what they actually do to our hair, if they can deliver on promises for shinier, smoother, or stronger locks – and whether leave-in treatments could be more effective than conditioners you wash off in the shower? Listener Franziska also got in touch, as she wondered if we could also have a look at heat protection prod...
Feb 23, 2023•27 min
Listener Isla, 11, wants to know if bottled water from the UK's biggest selling brands such as Evian and Buxton is cleaner, healthier, cheaper and greener than the stuff that comes from the tap. Greg Foot drills down into the subject, investigating the claims made by manufacturers of bottled water. Does it make any difference if water has spent years underground being "filtered by rocks" before being bottled? Are there more minerals in bottled water than in tap? And even though companies are mak...
Feb 16, 2023•27 min
When it comes to shop-bought painkillers, there are rows and rows of shelves dedicated to them in supermarkets and pharmacies – ranging from own-brand tablets, to more expensive capsules and caplets, as well as branded packets that promise to work faster, and target specific pain. Listener Hannah got in touch all the way from Tunisia to ask the questions – what’s the difference between paracetamol, ibuprofen or aspirin? Can certain painkillers target specific pain? And are any of them able to de...
Feb 09, 2023•26 min
In this episode presenter Greg Foot investigates three products that promise to make washing your laundry better for the planet. Listener Clare wants to know if the Ecoegg she’s using really is a greener alternative to liquid detergent and whether the cleaning pellets inside are harmful to the environment. Another listener, Jane, got in touch about laundry sheets – strips of concentrated detergent that go inside the washing machine’s drum. Is the slightly higher cost worth it to cut down on wast...
Feb 02, 2023•28 min
Petrol is something millions of drivers around the UK rely on, but when faced with the choice of what to fill up with at the pumps, many wonder what is the difference between regular and premium unleaded? That’s exactly what listener Irfan wanted to know, and if premium can really deliver on its promises to make your car more efficient, take you further, and clean out your engine for a higher price tag. Greg Foot drives the investigation into unleaded petrol, what’s changed since we moved from E...
Jan 26, 2023•27 min
Sales of energy drinks are rising and their brightly coloured cans line the shelves of almost every supermarket or grocery store in the UK. But do brands like Monster, Red Bull and Relentless deliver on their promises? Listener Syed is a consultant radiologist and says he needs to be on his A-Game in his demanding job. He wants to know if an energy drink would be any better than his usual cup of coffee in helping him stay alert. He's also keen to know more about some of the ingredients they cont...
Jan 19, 2023•27 min
Shampoo ranges hugely in price, from own brand bottles to premium products that promise to improve your hair, leaving it in better condition, stronger and shinier. But can they really deliver? Listener Sophie sent in a WhatsApp to ask just that, as well as whether we should use different shampoos depending on our hair type, if sulphates or parabens could be harmful to our hair, and if shampoo bars can do the job just as well, and be a greener option? Greg Foot untangles some of the most common c...
Jan 12, 2023•26 min
Two products dominate the market for nasal sprays that claim to reduce symptons of a cold - Vicks ‘First Defence’ and Boots ‘Dual Defence’. But do they work? Listener Leah got in touch because she catches lots of colds from her young son and wants to know if they can help her get over them more quickly. She also wants to know if they’re safe to use regularly and how long you should take them for. Presenter Greg Foot sniffs out the evidence and talks to a leading expert who’s dedicated most of hi...
Jan 05, 2023•23 min
In the run up to Christmas, many parents will be checking on their battery supplies ahead of Santa bringing gifts that require them. But do branded batteries, that promise more power and longer life at a higher price point, really deliver it? Listener Peter got in touch asking just that, as well as whether batteries have an expiry date? Greg Foot recruits some year 7 pupils and their teacher to help him perform a test to find out, and speaks to one of the country’s leading scientists about what ...
Dec 15, 2022•27 min
Smelling good can come with a hefty price tag with the price of perfumes often getting into the hundreds of pounds. But what if there was a cheaper alternative? Listener Callum got in touch because his bottle of expensive perfume is about to run out. Presenter Greg Foot turns his nose to the task, testing so-called 'clone' perfumes which claim to get as close the originals as to be indistinguishable - but for a fraction of the cost. Speaking to an expert perfumer he finds out exactly how the clo...
Dec 08, 2022•29 min
It’s something most of us will have used at some point, and a product that has been around for decades in various forms. But do all the advertised fancy features, pivoting heads, multiple blades and higher price tags, really make a difference to your shave? Listener Tim got in touch, asking just that, as well as whether all the extras on razors these days also have an impact on the environment? Greg Foot focuses on modern cartridge razors in this episode, and cuts through the marketing hype to g...
Dec 01, 2022•29 min
It’s one of the most talked-about cosmetic products but what’s the evidence that collagen supplements really do slow the visible signs of the ageing process? Listener Jo got in touch wanting to know if the collagen supplement she’s spending £53 per month on will live up to its claim of reducing wrinkles, while promoting “glossy hair and plump dewy skin.” Other listeners asked whether it can help with joint aches and pains, or strengthen nails? Greg Foot sets out to answer all these questions by ...
Nov 24, 2022•29 min
With shorter days, longer nights, and bad weather leading to the winter blues for many, and for some the more severe Seasonal Affective Disorder, Sliced Bread investigates whether specially designed lights can really help improve how we feel. Listener Ross got in touch on WhatsApp after he’d read claims Wake Up Lights and SAD Lamps can boost our mood, and wanted to know what “medically certified” means when accredited to them, and if it’s worth paying extra for it? Greg Foot finds out by speakin...
Nov 17, 2022•33 min
It's getting colder and with the cost of living rising, how best to heat our homes in the most efficient way possible has become a big question. Listener Ken got in touch about a new kind of portable ceramic heater he's seen advertised, promising to heat your room using 30% less energy. Greg Foot teams up with Octopus Energy to run it through the evidence mill and test it against three other types of portable heater: a convection heater, a fan heater and an oil-filled radiator to find out which ...
Nov 10, 2022•29 min
The Natural Deodorant market has recently expanded, with plenty of products out there promising to keep you fresh, and dry, without the use of traditional ingredients such as aluminium salts. Listener PC Hollie got in touch on WhatsApp after she’d seen claims that regular deodorants and antiperspirants containing aluminium salts might be bad for our health, and wanted to know if natural deodorants are really better for us? She also wanted to know why they’re more expensive, if it’s worth paying ...
Nov 03, 2022•27 min
Can compression leggings improve performance and help your limbs recover after exercise? Do magnesium bath salts really help soothe aching muscles? And do water softeners and filters really help save us money on our appliances by preventing scale from building up in our pipes? With Greg still in Edinburgh for the Festival, we’re sticking with last week’s format and investigating THREE of the wonder-products you’ve sent us on WhatsApp in a "triple slice" of quick investigations. First up, Listene...
Aug 18, 2022•28 min
Is expensive dog food better for your pooch than the cheap stuff? Are diet fizzy drinks actually ‘bad’ for you? And should we all add mouthwash to our bathroom routine? With Greg up at the Edinburgh Fringe Festival this week we’re doing something a little different - investigating THREE of the wonder-products you’ve sent us on WhatsApp in a triple slice of quick investigations. First up, listener Ali in Bristol wants to know whether the expensive dog food she bought is really better for her new ...
Aug 11, 2022•26 min
We watch paint dry for you to find out if pricey paint is worth it. Domestic interior wall paint comes in many different pots, colours, types and price points. However some claim the extra pennies mean they’re not only better quality and offer a better finish, but that they’re better for the environment too. Listener Emily got in touch on WhatsApp after she bought a house that needs redecorating. She has six children, two dogs, two tortoises, two ducks and five chickens, so is very much in need ...
Aug 04, 2022•27 min
Can massage guns from the likes of Theragun, Pulse Roll and others brands, help you warm up before exercise and recover more quickly after it? Massage guns are one of the biggest-selling fitness devices of the past few years. They have a vibrating silicone head that delivers percussive pressure onto the muscle. Manufacturers claim ‘vibration’ therapy increases bloodflow and helps the user warm up before exercise, perform better during it AND ease soreness afterwards. But does it? Listener Clare ...
Jul 28, 2022•25 min
Is there really a pill that can help you burn fat? Sticking to a good diet and exercising to lose weight takes hard work and discipline, so what if there was something you could take that could do some of that work for you? Listener June got in touch wanting to know if this is the case, or if it’s too good to be true? Are there really pills being sold online and on the high street that can help you burn fat, or speed up your metabolism? Greg Foot investigates, hearing from some people who’ve tri...
Jul 21, 2022•26 min
Do more expensive pairs better protect your eyes? Whether you’re hoping to catch some rays here in the UK or heading abroad for summer sun, you’ll want to think about protecting your eyes from the harmful UV in those rays. But how much do you need to spend on sunglasses to keep you safe? Listener Wayne got in touch wanting to know the answer. He also wondered whether darker tints better protect his eyes, and asked what the term ‘polarised’ means, and whether he should ensure any new pair are exa...
Jul 14, 2022•25 min
A small jar of this sticky stuff can cost anything from around ten pounds to over a thousand. Some brands claim it can help with sore throats, skin problems, hay-fever and poor sleep. Other producers curiously make no health claims at all about their manuka products. So what’s the buzz about and is there any science behind it? Listener and beekeeper David got to get in touch to ask whether manuka honey can boost the immune system, and if it has any benefits over and above the ordinary honey from...
Jun 30, 2022•23 min
It seems like everyone’s talking about air fryers. They were recently dubbed the product that defined 2021, with sales up by 400%. But how do they fry with air? Listener Sally in Harrogate has another question too: at a time when the cost of living is rocketing will cooking with an air fryer save her money? And, because they use little to no oil, is cooking food in an air fryer also “healthier”? Greg Foot investigates, speaking to a food scientist at Imperial College London and the BBC’s Good Fo...
Jun 23, 2022•30 min
Air purifiers have become one of the most popular home gadgets in recent years and you can spend hundreds of pounds on the top-end models. They promise to remove harmful pollutants in the air, reduce the symptoms of allergies and help you breathe more easily in a more healthy environment. But what's the evidence around how effective they are? Listener Laura, a respiratory doctor, got in touch wanting to know whether they work and even if they could help some of her patients in their daily lives....
Jun 16, 2022•25 min
Brands are promising to plant a tree for each can of beer, tshirt, or pair of trainers you buy, offsetting their carbon emissions so they can put an attractive ‘carbon negative’ sticker on a product to show green they - and you - truly are. But how effective is a new forest at offsetting a company’s emissions, what does ‘carbon negative’ really mean, and how do they go about proving they’ve achieved it? Trees are just one type of carbon offset. Another, albeit promising but expensive, option is ...
Jun 09, 2022•25 min
Huel and Soylent are two of the best known names in ‘complete nutrition’ drinks. More of us are trying them and you can now get pre-made bottles of these concoctions in the food aisle in supermarkets. Firms sell them as an instant alternative to breakfast, lunch and dinner too. But how ‘nutritionally complete’ are these liquid lunches? Listener Tom admits snacking on one in the middle of the afternoon but has questions. Does the fact they start as an ultra processed powder affect how healthy the...
Jun 02, 2022•25 min
