The skincare mistakes that are ageing you, warns dermatologist
Do you really know what you put on your skin? Is your routine carefully tailored to your needs, or a mismatch of celebrity-endorsed products and late-night impulse buys?
If it’s the latter, you could be making costly skincare mistakes that do more harm than good.
Consultant dermatologist Dr Tina Tian at Stratum Dermatology Clinic Oxford warns that common errors, like using retinol without sunscreen can worsen problems rather than solve them: ‘It's like trying to put out a fire while pouring gasoline on at the same time’.
And with the skincare industry more saturated than ever, it’s no wonder we’re confused: 80% of people say it’s ‘rife with misinformation’ and nearly two-thirds of women misidentify their own skin type. The result? Well-intentioned routines that accidentally sabotage your complexion.
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1. Doing too much
When it comes to your skin, less is more. Slathering on a ton of products can cause dry patches, acne breakouts, clogged pores or even oiliness from too much hydration.
‘People layer on five, six, seven products, thinking more equals better, but all that really does is confuse the skin’, says Dominique Tufa, the Founder and Beauty Consultant of Global Makeup Awards. ‘I’ve had people tell me they’re using a new serum, a toner, a brightening treatment, and an exfoliant—all at once—and then wonder why their skin feels irritated.’
2. Not checking the labels
Skipping the small print on skincare labels could expose you to harsh ingredients, says chemist Julie Macken, co-founder of natural skincare brand Neve’s Bees. ‘Check the labels – you’ll be surprised at what you are buying (most skincare companies want to sell you water!)
‘When ‘aqua’ tops the ingredient list, it can point to a formula bulked out with water and potentially irritating chemicals, says Macken. ‘Things like emulsifiers, preservatives and stabilisers that can damage your skin’s natural barrier – they’re only added when water (aqua) is added!’
3. Forgetting sunscreen
The sun causes 90% of skin ageing, so skipping sunscreen is the biggest mistake you can make - particularly if retinol or other strong actives are part of your routine. Tufa says, ‘I know it doesn’t feel urgent when you’re indoors or the weather’s grey but not protecting your skin every day can undo a lot of your efforts over time.”
Dr Tina Tian says most people make the same mistake when buying SPF: ‘I've seen loads of high-end sunscreens and pure mineral sunscreens that have high SPF 50 but offer very low UVA protection, leaving patients vulnerable to melasma or even skin cancer. For this reason, I always recommend chemical (organic) sunscreens with UVA protection 4 star and above.’
4. Over-exfoliating
The old saying ‘no pain, no gain’ doesn’t apply to skincare. Over-exfoliating might feel satisfying in the moment but scrubbing too hard or too often strips the skin barrier, leaving your complexion red and raw instead of radiant.
Chartered scientist and chartered chemist, Bruce Green says ‘I see a lot of people using strong acids or scrubs daily when once or twice a week is usually enough. Over-exfoliating can damage the skin’s protective barrier, causing redness, irritation, and dryness.’
5. Or under-exfoliating
‘On the other hand, not exfoliating enough leads to dead skin buildup,’ says Green who reassures exfoliation is effective if practiced with care. ‘Harsh soaps and lotions should be avoided. Whereas simple, pure & alcohol-free products will be less irritating.’
6. Not adjusting skincare to age
As you age, so do your skin’s needs. Dr Tian breaks down how our priorities shift across the decades: ‘Teenagers should focus on active acne management, twenties on prevention and sun protection, thirties on early intervention with retinoids and antioxidants. From forties onward, hormonal changes mean barrier support becomes paramount.’
7. Overdosing on actives
Flooding your face with multiple doses of potent actives like hyaluronic acid and retinol can damage the skin barrier.
Dr Robinson, one of the UK’s leading non-surgical cosmetic experts, says, ‘when it comes to skincare, using high concentrations of active ingredients is another pitfall. ‘More is not always better. Over-dosing on acids, retinoids or vitamin C can disrupt the skin barrier, causing redness, irritation and even long-term sensitivity. A carefully balanced formulation, introduced gradually, is far safer and more effective.’
8. Not using complimentary products
Throwing products together without understanding how they work can be a major skincare mistake. Pairings such as retinol and salicylic acid don’t just cancel out benefits – they can overwhelm your skin.
Julia Vearncombe, founder of Skin Genius says, ‘streamlining your skincare routine to just using the products your skin needs ensures your products work in harmony with each other and your skin, rather than creating conflict.’
9. Layering multiple actives
It can be tempting to overload your skin with multiple actives, but Dr Tian says this hinders results. ‘Skincare requires patience — actives usually need 12 weeks for benefits to show, and products should be introduced one at a time, at least two weeks apart to allow the skin to adjust.’
10. Choosing filler over a booster
‘Choosing filler when a patient really needs a skin booster is a common mistake I see,’ says Dr Robinson. ‘Fillers are designed to restore lost structure and volume, whereas skin boosters work on skin quality which means hydration and texture. If someone is hoping for glow, elasticity or an improvement in fine crepiness, a filler won’t address the issue and can leave the face looking heavy or unnatural.’
11. Overusing harsh products
There’s a chance your daily products are doing more harm than good according to Tufa. ‘Harsh cleansers that strip your skin, products with strong fragrances or alcohol, or overly aggressive anti-ageing treatments like retinol or hydroquinone, when used too often without care, can all trigger breakouts, redness, and dryness.
12. Damaging skin barrier
Think of your skin barrier as a natural bodyguard: it blocks irritants out while locking in vital essentials like water. Looking after this protective barrier should be your top priority.
‘Barrier health is foundational and should always be the first thing you address,’ says Dr Tian. ‘I see so many people with oil dehydrated skin caused by barrier damage.’
13. Changing products too fast
Dr Tina Tian suggests giving a product at least 12 weeks to see if it works for you, stating that chopping and changing between them leaves skin confused and tired. ‘People simply want results too quickly. Even prescription creams take weeks to months to work, but social media often promises "miracle" fixes. When the results don't appear within a few weeks, people dismiss the product too soon and start piling everything on at once.’
14. Stripping skin of natural oils
Our natural oils get a bad rep, leading many to aggressively cleanse their complexion to rid it of any trace of oiliness. Vearncombe says this approach backfires: ‘When you over-cleanse or use aggressive drying products, your skin panics and produces even more oil to compensate for what's been stripped away.
‘Skin needs oils to soften, calm and protect it, they are essential to maintain the skin’s natural barrier and skin health. The key is to work with your skin rather than fight it to find its natural, healthy balance.’
15. Ignoring your skin type
Dominique Tufa has tested some of the best skincare products out there through the Global Makeup Awards, she believes that the key to finding the right product is understanding what works for your skin type. ‘It’s so easy to get caught up in influencer routines or viral trends that promise glowing results, but what works for someone else might not be right for you. Skincare has to be personal, or it just doesn’t work the way it should.’
‘If your skin is oily, don’t fight it—use lightweight, oil-free products that help balance it. If it’s dry, look for creams with ingredients like ceramides or hyaluronic acid. If you’re sensitive, avoid heavy fragrances and opt for soothing, gentle products.’
16. Sticking to the same routine in all seasons
Just as your routine should evolve as you age, you should also shake up your skincare line-up as the seasons change. Adjusting your skincare to the weather should come as naturally as swapping out your wardrobe.
Laura Porter, Skincare Expert, Facialist & Founder of FAB Skincare says: ‘Your skin’s needs change with the climate. In summer, you might need lighter hydration and stronger sun protection, while in winter, skin usually craves richer creams and extra barrier support. Sticking with the exact same products year-round often leaves skin either overloaded or under nourished.’
17. Not listening to your skin
As the body’s largest organ, your skin is a complex and powerful mechanism that is constantly reacting to outside stressors. To keep it happy and healthy, you need to listen to what it tells you.
‘If something’s not feeling right—your skin is breaking out more, you’re getting red or itchy, or your skin feels constantly dry or tight—it’s probably time to stop and rethink.’ Says Tufa, ‘and even if a product isn’t causing a reaction but also isn’t doing anything after a few weeks, it might just not be for you. That’s okay. It’s better to cut it out than to keep hoping for results that never materialize.’
Gone too far?
If you’ve gone too far with an overcomplicated skincare routine and are now paying the price with flare-ups and a depleted complexion, dermatologist Dr Tina Tian recommends you return to the basics.
‘I advise patients to reset with a simple two-step routine: a gentle hydrating cleanser (e.g. CeraVe Hydrating Wash) plus plain Vaseline or an ointment to restore the barrier. Do this for up to 2 weeks to give your skin barrier time to restore.
‘Once the skin has calmed, reintroduce products one at a time, spaced at least two weeks apart before adding the next active. This prevents flare-ups and makes it clear which products are genuinely helping.’
As a skincare obsession continues to dominate the beauty world, try to block out the noise, and listen to your skin. Ignore beauty buzz words and promises of “miracle” serums and instead focus on a few trusted products that enhance your skin’s natural balance, while also protecting it from stressors.
How to simplify your skincare routine
Follow Dr Tina Tian’s guide to a streamlined regime that nurtures your individual skin needs:
Step 1: Build your foundational routine
‘This basic approach works for all skin types apart from highly oily skin. I see so many people with oily dehydrated skin caused by barrier damage or dehydration triggering compensatory oil production:
- Gentle hydrating cleanser (CeraVe Hydrating Wash or Cetaphil Gentle)
- Choose a moisturiser that contains glycerin, hyaluronic acid, but also things like ceramides and other natural fatty acids that rebuild the skin barrier, such as CeraVe Daily Moisturising Lotion. For very dehydrated skin, I love the Bioderma Atoderm Intensive Baume.
- In the morning: SPF 50 with high UVA protection (minimum 4-5 star rating)
‘For genuinely oily, clog-prone skin, I might switch the cleanser to CeraVe Renewing SA Cleanser to help regulate oil production. For very sensitive skin, add Cicalfate by Avène before moisturiser, or Cicaplast by La Roche-Posay after moisturiser to help boost skin barrier.’
Step 2: Add targeted actives
‘Skin concerns include things like acne, fine lines, redness, and pigmentation. I love choosing multi-tasking ingredients that hit a few of these at the same time. For example, retinoids tackle fine lines, pigmentation, and acne. My favourite over-the-counter options include No7's retinol range and Medik8's Crystal Retinal range.
‘Vitamin C is excellent for brightening, antioxidant protection, and increasing glow - my favourite is SkinCeuticals CE Ferulic, and a really great affordable option is CeraVe's 10% Vitamin C serum. Other ingredients I really like include azelaic acid, which addresses redness, acne, rosacea, and pigmentation, making it excellent for sensitive skin.
If you're having persistent issues despite optimizing your skincare, we have a lot more to offer at Stratum Dermatology Clinic Oxford as consultant dermatologists - whether that's advanced prescription skincare, topical or oral medications, or other treatments like energy-based devices, microneedling, peels, and injectables. It's really worth consulting for a personalised assessment for more advanced treatments.’
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