Skincare Myths vs Evidence: Ten Common Beliefs Put to the Test
Skincare advice is full of confident claims, some true, some half-true and some harmful. Myths spread through family, friends and social media, and acting on them can waste money or damage skin. This guide takes ten common beliefs and checks each against what research and regulators say, in plain language, with practical advice. It also gives a simple way to test new claims yourself. We wrote this for readers in Pakistan, where skincare myths spread quickly through families and social media.
Key takeaways
- Many popular beliefs are only partly true or are untrue, such as pores opening, toothpaste on pimples and drinking water for hydration
- Natural does not mean safe and chemical does not mean harmful
- Sunscreen matters indoors near windows and on cloudy days
- When in doubt, ask: what is the evidence, who benefits and what does a dermatologist say
Myth 1: Hot water opens pores and cold water closes them
Pores are the openings of hair follicles. They do not open and close with temperature. Their size depends mainly on genetics, oil production and age. Hot water strips oils and irritates skin, so lukewarm water is better; see washing your face with hot water in winter.
Verdict: false. Use lukewarm water and a gentle cleanser.
Myth 2: Toothpaste, lemon and baking soda clear pimples
These remedies irritate or burn skin and can leave marks. Lemon plus sun can cause burns and brown marks, as described in case reports of lime-induced phytophotodermatitis, and baking soda disrupts the barrier. See lemon juice and baking soda on the face.
Verdict: false and harmful. Use proven ingredients such as salicylic acid, benzoyl peroxide or azelaic acid, and see a doctor for inflamed acne.
| Myth | Verdict | Better advice |
|---|---|---|
| Hot water opens pores | False | Lukewarm water |
| Toothpaste dries pimples | False, harmful | Hydrocolloid patch, proven actives |
| Lemon brightens skin | False, harmful | Sunscreen, gentle ingredients |
| Baking soda exfoliates | False, harmful | Gentle exfoliant |
| Pores can be shrunk permanently | False | Keep pores clear, sunscreen |
Myth 3: Oily skin does not need moisturizer
Oily skin can be dehydrated, and skipping moisturizer can leave skin tight and make oil production feel worse. A light gel or lotion moisturizer helps the barrier. A review of the role of topical emollients and moisturizers in dry skin barrier disorders describes how moisturizers support barrier function.
Verdict: false. Choose a light, oil-free moisturizer.
Myth 4: Drinking lots of water cures dry skin
Staying hydrated is important for health, but drinking more water than you need does not fix dry skin, since dryness often comes from barrier damage, dry air and washing. Topical moisturizers act directly on the outer skin layer. Seasonal studies show that skin dries in low humidity regardless of drinking habits; see Islamabad’s dry winter.
Verdict: partly true. Drink enough, and moisturize.
Myth 5: You do not need sunscreen indoors or on cloudy days
Ultraviolet A passes through clouds and window glass. If you sit near a window, drive or spend time outdoors, sunscreen matters. Sunscreen also helps prevent marks and photoageing. A study on when sunscreen should be reapplied underlines regular use. See sunscreen and sun care guides.
Verdict: false. Use sunscreen daily on exposed skin.
- Pores do not open and close
- Home remedies like lemon and toothpaste are harmful
- Oily skin needs moisturizer
- Water alone does not fix dry skin
- Sunscreen is for cloudy days and windows too
- Check claims before buying
Myth 6: Natural products are always safer
Natural products include allergens and irritants. Studies of natural cosmetics have found recognised contact allergens, and reviews of botanical extracts describe allergic reactions; see natural vs chemical skincare. Everything is a chemical, and many synthetic ingredients are well tolerated. Judge ingredients individually.
Verdict: false. Natural does not equal safe.
Myth 7: More products mean better skin
More products often cause irritation and cost without extra benefit. Overloaded skin can sting, flake and break out; see too many active ingredients. A simple routine of cleanser, moisturizer, sunscreen and one active is enough for most people.
Verdict: false. Less, done consistently, is better.
Myth 8: Expensive products work better
Price reflects marketing, packaging and brand as well as formula. Compare ingredients and price per mL; see expensive vs cheap serums. Some inexpensive products perform well and some expensive ones are not suited to your skin.
Verdict: false. Choose formula, suitability and evidence.
| Myth | Verdict | Practical advice |
|---|---|---|
| Natural is safer | False | Check ingredients |
| More products are better | False | Keep routine short |
| Expensive works better | False | Compare formula and price |
| Fasting or detox cleanses skin | Unproven | Balanced diet, sleep |
| Diet has no effect on acne | Partly false | Some patterns linked in some people |
Myth 9: Diet has nothing to do with acne, or one food causes it
A systematic review of diet and acne found that some dietary patterns, such as high glycaemic load and some dairy intake, may be associated with acne in some people, though evidence is mixed. No single food is the cause for everyone, and extreme diets are not recommended. Eat a balanced diet and do not assume that a food is guilty without testing carefully with medical advice.
Verdict: partly true, complicated. Moderation helps, and acne needs proper treatment.
Myth 10: Skin lightening creams are safe because they are sold openly
Some lightening creams contain mercury, steroids or unregulated hydroquinone, with documented harm; see fairness creams: what to check. Being on a shelf does not mean a product has been tested or approved. The FDA explains that cosmetics are not approved before sale.
Verdict: false. Check labels and ask a dermatologist.
How can you test a new claim?
Ask who is making the claim and what they sell. Ask whether there is evidence beyond testimonials, and whether it applies to people like you. Check with a dermatologist or pharmacist, and look for statements from regulators and reviews. Patch test new products and introduce them slowly. Be sceptical of promises of overnight results, secret ingredients and miracle cures.
See how to spot fake skincare for product checks. The Acne & Oil Control Serum and the Hydration Moisturizer list their ingredients on their product pages; read them, patch test and introduce each slowly.
When should you see a doctor?
Please consult a doctor or dermatologist for acne that is inflamed or scarring, burns or reactions after home remedies, persistent dark marks, changing moles or any skin problem that worries you.
What about myths about age, gender and skin colour?
Some myths relate to who needs skincare. Men need sunscreen and moisturizer too, not only women. Teenagers need gentle care and sunscreen, and they should not use strong anti-ageing products. People with deeper skin tones need sunscreen, since they can still burn, get marks and develop skin cancer; reviews of melanoma in skin of color describe how it can be diagnosed late. Older adults benefit from moisturizer and sun protection, and they should check moles. Skincare is for health, not only appearance.
See a simple skincare routine for men and student skincare routine on a budget.
| Belief | Reality | Advice |
|---|---|---|
| Only women need skincare | False | Everyone benefits from sunscreen and moisturizer |
| Dark skin does not need sunscreen | False | Use it daily |
| Teens should use anti-ageing creams | False | Gentle care and sunscreen |
| Skincare is only about looks | False | It protects health |
| Expensive anti-ageing creams are needed | False | Sunscreen and a simple routine |
What about myths on social media and influencers?
Viral routines, skincare trends and influencers can spread myths quickly, sometimes with commercial motives. Be cautious of before and after photos that may be edited, claims of miracle results, long routines for unproven benefits and pressure to buy. Check whether the advice fits your skin, whether it comes from a qualified source and whether it is balanced. Follow dermatologists and evidence-based sources, and ask questions.
What should you do with a myth you have already followed?
If you have used a harmful remedy, stop it, rest the skin with a gentle routine and see a doctor if there is damage. If you have followed a harmless myth, you may simply drop it. Be kind to yourself, since myths are everywhere. Share accurate information with family, since advice often passes down generations.
Frequently asked questions
Do pores open and close?
No. Pore size depends on genetics, oil and age.
Does toothpaste help pimples?
No. It irritates and can burn.
Do I need moisturizer if my skin is oily?
Yes, a light one.
Does drinking water fix dry skin?
Staying hydrated helps health, but moisturizer treats dry skin.
Do I need sunscreen indoors?
Near windows, yes.
Are natural products safer?
Not necessarily.
Does diet affect acne?
Some patterns may in some people, but evidence is mixed.
When should I see a dermatologist?
For inflamed acne, burns, persistent marks or changing moles.
Sources
- Meixiong J et al.. Diet and acne: A systematic review. JAAD Int. 2022. PubMed 35373155
- Lodén M. Role of topical emollients and moisturizers in the treatment of dry skin barrier disorders. Am J Clin Dermatol. 2003. PubMed 14572299
- Hankinson A et al.. Lime-induced phytophotodermatitis. J Community Hosp Intern Med Perspect. 2014. PubMed 25317269
- Sukakul T et al.. Contact allergens in natural cosmetics-A market survey. J Cosmet Dermatol. 2022. PubMed 34449966
A gentle reminder
Skincare helps the look and feel of your skin; it does not treat medical conditions. Patch test any new product behind the ear or on the inner arm first, and introduce one new active at a time. If you are pregnant or breastfeeding, or you have a skin condition such as eczema, ask your doctor before adding active ingredients. See our FAQ for more, or build your own routine.
Related reading: Safety & Consumer Awareness guides · Fairness Creams: What to Check on a Label and Why Skin Lightening Can Harm · Parlour Bleach and Skin Polish: Burns, Irritation and Pigment Damage · Parabens and Sulphates: Myths, Facts and What to Check on the Label.
See also: the complete Chelure range · Skincare ingredients guide.
Do not hesitate to see a doctor if your skin becomes very painful, swollen or infected, if symptoms spread, or if you feel unwell. Guides like this cannot replace a medical visit.