Many harmful beauty procedures do not look harmful at first. They promise fuller lips, smoother skin, straighter hair, or a faster glow, and the before-and-after photos look convincing. The problem is that some popular treatments carry risks that are easy to miss: infection, allergic reactions, burns, hair damage, or results that fade quickly while the side effects last much longer.
This guide is not here to scare you away from beauty treatments. It is here to help you weigh the real pros and cons before you book. For each of the ten procedures below, you will find what it promises, what can go wrong, who should be extra careful, and what safer questions to ask your technician or clinician.
1. Butterfly lips
Butterfly lips are a lip-filler trend that aims for a sharply defined, lifted shape. The technique often involves dissolving old filler first, then injecting new filler and sealing the lips to shape the contour. Because the lips have many small blood vessels, any filler injection carries a risk of bruising, swelling, uneven filler, and, in rare cases, blocked blood flow.
If you are considering lip filler of any kind, choose a qualified medical professional, ask about their emergency plan, and avoid bargain offers. A careful consultation, a patch discussion, and a realistic plan for one subtle session are far safer than chasing a dramatic trend in one visit.
2. Eyelash and eyebrow lamination
Lamination lifts and sets lashes or brows so they look thicker and more groomed. The effect usually lasts several weeks. The chemicals used to reshape the hair can dry it out, especially with repeated treatments. Over time, lashes and brows can become brittle, break, or lose their natural curl.
Space out sessions, avoid lamination if your hairs are already dry or damaged, and ask what products will be used. A good technician will check your hair condition first and tell you honestly if you need a break to let the hairs recover.
3. Aggressive facial treatments
Salons offer many facials: deep cleansing, peels, microneedling, and more. These can leave skin feeling fresh, but they cannot fix deep acne, deep wrinkles, or pigment on their own. Strong peels and microneedling also carry infection risk if tools, skin preparation, or aftercare are not handled carefully.
Before booking, ask what the treatment can and cannot do, what downtime to expect, and how to care for skin afterwards. For persistent skin concerns, a dermatologist can offer a diagnosis and a plan that is safer than repeating expensive facials that only give a temporary glow.
4. LPG massage for cellulite
LPG massage uses a device that rolls and suctions the skin. It is often marketed for cellulite and body contouring. Studies suggest it may reduce body measurements slightly for some people, but evidence for a lasting reduction in cellulite is weak. Many people feel disappointed after paying for a full course.
If you enjoy the massage itself, it can be relaxing. But treat it as a comfort treatment, not a guaranteed fix. Regular movement, strength training, balanced meals, and enough water do more for long-term body confidence than any single device.
5. Waxing
Waxing is affordable and gives smooth results for weeks. It also removes a thin layer of skin along with the hair, which can cause redness, irritation, ingrown hairs, and, if hygiene is poor, infection. People with very sensitive skin, eczema, sunburn, or certain medications should be especially careful.
Choose a salon with clean tools, fresh applicators, and trained staff. Avoid waxing irritated or broken skin, and follow aftercare: loose clothing, no heavy fragrance or exfoliation for a day, and gentle cleansing. If you get repeated ingrown hairs or infections, talk to a clinician about gentler hair-removal options.
6. Keratin hair straightening
Keratin treatments can make hair smooth and easier to style. Some formulas release formaldehyde or similar compounds when heated, which can irritate eyes, nose, throat, and lungs. The fumes affect both the client and the stylist, especially in a poorly ventilated room.
Always ask for the full ingredient list and safety data, and check that the salon is well ventilated. If you are pregnant, have asthma, or have a sensitive scalp, consider safer smoothing options such as conditioning treatments, heat-protectant styling, or argon and coconut oil care at home.
7. Instant tan: sprays and creams
Spray tans and self-tanning creams feel safer than sunbathing, and in many ways they are. They still carry risks: inhaling spray mist, skin allergies, uneven colour, and irritation on sensitive skin. A tanning bed, by contrast, uses UV radiation and carries a much higher skin-cancer risk, so it is not a safe alternative.
If you use self-tanner, choose a well-ventilated space, protect eyes and lips during sprays, patch-test new products, and exfoliate and moisturise evenly first. The safest tan remains no tan, but careful self-tanning is a far better choice than UV beds.
8. Eyelash extensions
Eyelash extensions save makeup time and can look beautiful. The risks depend heavily on the technician and the glue. Poor hygiene, cheap adhesive, or heavy lashes can cause allergic reactions, eye infections, irritation, and damage to natural lashes.
Ask what glue is used, whether it is formaldehyde-free, how tools are cleaned, and how long the appointment will take. Avoid extensions if you have eye infections, allergies, or very fragile lashes. If your eyes water, itch, or swell after a session, remove the extensions safely and seek advice promptly.
9. Nail extensions
Nail extensions are popular for a polished look, and many people wear them for years without problems. The risks come from gels, glues, filing, and long wear: allergic dermatitis, lifting, trapped moisture, fungal infection, and thinning of the natural nail plate.
Choose a reputable nail technician, take breaks between long sets, and watch for warning signs such as itching, redness, swelling around nails, or green discolouration. Keep nails clean and dry, avoid picking at lifted extensions, and let a professional remove them rather than peeling them off.
10. Laser hair removal
Laser hair removal is one of the more effective long-term options, and for many people it is safe when done by a trained professional. It is not suitable for everyone. It works best on light skin with dark hair, and is less effective on very light hair or tanned skin. Side effects can include redness, burns, blisters, and pigment changes, especially with the wrong settings.
Book a consultation first. Ask about the laser type, your skin and hair type, expected sessions, and aftercare. Avoid sun exposure before and after sessions, and tell the provider about medications, skin conditions, and recent tanning. A careful patch test is worth the extra time.
How to judge any beauty procedure before you book
Use the same checklist for every treatment. First, ask who is doing it and what training they have. Second, ask what is in the product and what the risks are. Third, ask what happens if something goes wrong, and whether there is aftercare support. Fourth, check reviews from real clients, not just photos. Fifth, trust your instinct: pressure to book today, unclear pricing, or a refusal to answer questions are all red flags.
Also consider the cost over time. A treatment that needs repeating every few weeks can cost more than a simpler routine that gives 80% of the result. Good sleep, sun protection, gentle skincare, and consistent hair care often improve appearance more than a single dramatic procedure.
Frequently asked questions
Are these procedures always harmful? No. Many are safe when done by trained professionals with good hygiene and honest expectations. Risk rises with cheap products, untrained providers, repeated aggressive sessions, and poor aftercare.
What is the safest way to try a new treatment? Start with a consultation and patch test, choose a licensed provider, read the ingredients, and begin with the gentlest version. Keep the first session modest so you can see how your skin and hair react.
When should I see a clinician? Seek care for swelling, severe pain, blisters, pus, fever, vision changes, breathing difficulty, or a rash that spreads. Do not wait for it to clear on its own if symptoms worsen.
This content is for informational purposes only and does not constitute medical advice. Speak to a qualified professional before starting any cosmetic procedure, especially if you have allergies, skin conditions, or a medical history.
For more everyday beauty and lifestyle ideas, see 11 Everyday Beauty Mistakes That Can Secretly Ruin Your Look, 5 Fashion Mistakes That Can Ruin Even the Most Stylish and Expensive Look, and 20 Summer Nails Ideas Taking Over This Year.
