We spend a lot of time and money pampering our skin, but how much do we really know about the largest organ in the body? You might be surprised when you learn these fascinating facts from experts about our skin...
1. Your gut health affects your skin
"If you have an unhealthy gut it can have a big impact on our overall health and especially the appearance of your skin," says celebrity facialist Su-Man. "Your gut is 80% related to your skin health and can cause acne, rosacea and pigmentation if unbalanced."
2. Moisturiser alone won't combat ageing
"No amount of bathing our skin in moisturiser will prevent wrinkles," says Dr Penelope Tympanidis, consultant dermatologist and founder of Dermaperfect. "They will help keep the skin hydrated and supple but it's active ingredients in skin care like Retinol or Vitamin C that will make the difference."
3. Dry skin can lead to infections
Dr Uliana Gout, president of the British College of Aesthetic Medicine and founder of London Aesthetic Medicine Clinic, says: "Few people realise that dry and cracked skin which is not managed properly also increases risk of fungal, bacterial and viral skin infections.
"My favourite ingredients these days are hyaluronic acid moisturisers - expensive but well worth the improvement they offer us."
4. Dry skin and dehydrated skin are not same thing
Abi Cleeve, MD at Ultrasun UK and founder of SkinSense, is also a fan of hyaluronic acid for dehydrated skin - which differs from dry skin.
"Dry skin is a type," she says. "So choose products formulated for dry skin, which needs a constant hydration flow.
"Dehydrated skin is a condition. Environmental pollutants dry out skin continuously, so incorporate hyaluronic acid which is able to hold 1,000 times its weight in water."
5. Your lips are especially prone to moisture loss
LloydsPharmacy pharmacist Pareena Patel says: "Whilst it can be tempting to keep licking the lips or even picking off the dry skin, this can actually make it worse. The best treatment is regularly applying lip balm - particularly one with beeswax."
6. Combination skin is a bit of a myth
If you've noticed you have an oily T-zone but dry cheeks, you've probably been told you've got "combination skin", but that could be a result of the products you're using, according to Dr Mary Sommerlad, dermatologist on behalf of Cetraben.
"It is unusual to have extremes of this. If you do, it may be because you are using products that do not suit your skin type," Dr Sommerlad says.
"For instance, using products designed for oily skin which contain high levels of salicylic acid will dry and irritate your skin if you indeed have normal skin, leading to your normal areas of skin appearing dry and feeling uncomfortable."
7. Most skin aging is caused by external factors
"Only 3% of our skin's aging process happens because of 'intrinsic' factors like genetics," says Dr Bhavjit Kaur, cosmetic doctor and co-founder of Health & Aesthetics Clinic.
"Extrinsic factors like UV exposure, smoking, pollution, poor diet and too much alcohol speed up the process by causing what's called reactive oxygen species (ROS), or free radicals, which cause a cascade of cell damage and cause premature aging."
Kaur recommends hero ingredients like Vitamin C, niacinamide and ferulic acid to fight free radicals, and, of course, sunscreen.