Aesthetic treatment mistakes ten expensive ones, and how first-timers avoid them

Overview

Ten aesthetic treatment mistakes at a glance

The expensive mistakes in aesthetics are rarely dramatic. They are ordinary decisions made in a hurry: a cheap deal, a treatment squeezed in before a wedding, a package signed on the treatment bed. The cost shows up later, as filler that has to be dissolved, pigment that takes months to fade, or sessions you never use.

Each one is easy to avoid once you know what to check.

Mistakes 1 and 2

Choosing on price alone, and not checking who treats you

A low price per syringe, per shot or per session is not the same as a low price for the result. It can hide a rushed assessment, more product than you need, a product of unclear origin, or treatment by someone who is not a doctor. The reverse is also true: a high price is not proof of quality. Compare the whole plan: who assesses you, what is used, how many sessions are likely, what follow-up is included and what happens if something goes wrong.

Then check the person. The Singapore Medical Council's Search for Registered Doctors lets anyone look up a doctor by full or partial name or by MCR number, and doctors are listed while they hold a valid practising certificate. The Council's guidelines also state that aesthetic practice is not a specialty, so titles such as aesthetic physician or aesthetic dermatologist are not allowed; a doctor using one is a warning sign. Non-specialist doctors may perform the listed aesthetic procedures only once they meet set requirements, such as a Certificate of Competence.

Mistake 3

Unregistered products and injections outside a clinic

Singapore's Health Sciences Authority states that injectable products for aesthetic use, such as dermal fillers and wrinkle-relaxing injections, must be evaluated for safety, quality and effectiveness and registered by HSA before they can be supplied here, and that only qualified doctors should give them. HSA warns that do-it-yourself injectable kits sold online may contain unknown or contaminated ingredients, and lists severe allergic reactions, serious infections, blocked blood vessels with tissue death, blindness and stroke among the possible complications, some of them needing costly correction.

Unregistered products also turn up through cheap deals, overseas trips and treatments at homes, salons or hotel rooms. A licensed clinic should be happy to tell you the product name, show you the sealed packaging and record what was used and where, so that anyone treating you later knows what is there.

• Ask for the product name and the amount before you agree to treatment.
• Expect injections only in a licensed medical clinic, from a doctor.
• Keep a record of each treatment: product, amount, area and date.
• Walk away from injections offered at a salon, a home or a hotel room.

Mistakes 4 and 5

Overfilling, and stacking too much at once

Filler lasts longer than it looks. In an MRI study of 33 people with mid-face hyaluronic acid filler, filler was still visible in every one of them at least two years after injection, and in one person up to 15 years later. If every top-up assumes the last lot has gone, volume builds up into a heavy, puffy look sometimes called pillow face, and correcting it means dissolving, waiting and paying again.

Stacking is the related mistake: several new treatments in one sitting or one week, such as filler, a laser and a peel before a holiday. It multiplies swelling and downtime, makes it impossible to tell which treatment caused a reaction, and raises the risk of irritation and darkening in Asian skin. Natural-looking results usually come from a staged plan, with a review about two weeks after each step.

Mistake 6

Skipping sun protection after laser

Laser and light treatments create controlled inflammation, and in Asian skin inflammation can leave temporary darkening, called post-inflammatory hyperpigmentation. In a study of 37 Chinese patients treated with fractional laser, generalised darkening followed about 7% to 12% of treatment sessions depending on the settings, which is why doctors adjust energy, density and cooling for Asian skin.

Your part is protection. Singapore's UV is high all year, so a day at the beach or a long outdoor run soon after laser can undo careful settings. Use a broad-spectrum sunscreen every morning, reapply when outdoors, seek shade in the middle of the day, avoid tanning before treatment, and do not book a laser just before a beach holiday.

Mistake 7

Ignoring downtime before an event

Downtime is not only the day of treatment. Swelling, bruising, crusting and the time an effect takes to build all count, and an unexpected reaction needs time to settle and be reviewed. The safer approach is to plan backwards from the date and to start nothing new in the final two weeks.

Ask the provider what your skin is likely to look like on days 1, 3 and 7 for your specific plan, and leave a margin for a review.

Mistake 8

Buying a big prepaid package on the first visit

Packages can look like good value, but they move the risk to you. The Consumers Association of Singapore received 1,124 complaints about the beauty industry in the first half of 2026, more than double the same period a year earlier, with more than S$1.9 million in reported prepayment losses. Nearly four in ten complaints involved businesses not honouring their contracts, and about 15% involved alleged unethical sales tactics. CASE's advice is to avoid large advance payments where possible and to pay per use or in smaller instalments.

A first visit is for assessment, not for signing. Ask for the per-session price, how many sessions are proposed and why, what happens to unused sessions if you stop or the business closes, and whether the price includes GST. At SkinRev Lab, prices are published per session, before GST except waxing, which includes GST; treatment packages are non-refundable, which is why the team would rather you book a single session first if you are unsure.

Mistake 9

Not telling the doctor about medicines and supplements

Singapore Medical Council guidelines expect doctors doing aesthetic work to obtain informed consent and to explain side effects, including risks lower than those usually disclosed in conventional medicine. That conversation only works if the doctor knows what you take, so bring a full list, including supplements and anything bought overseas.

Some items change the plan rather than rule treatment out. Isotretinoin is a good example: a 2017 expert consensus found insufficient evidence to delay superficial chemical peels, laser hair removal, fractional lasers or skin surgery in people taking or recently stopping it, but advised against mechanical dermabrasion and fully ablative laser during treatment. Only the doctor can weigh this for you.

• Blood thinners, aspirin, anti-inflammatory painkillers and supplements such as fish oil, vitamin E and ginkgo: more bruising; never stop prescribed medicines on your own.
• Isotretinoin, now or recently: affects the choice and timing of resurfacing.
• Retinoids, acids and exfoliants on the skin: pause them before waxing, peels and some lasers, as advised.
• Medicines that make skin sun-sensitive, such as some antibiotics: relevant before laser and light treatments.
• Cold sores: lip and mouth-area treatments can trigger them, so a preventive plan may be needed.
• Pregnancy, breastfeeding, autoimmune disease, keloid scars, bleeding disorders and previous fillers: all change what is suitable.

Mistake 10

Chasing trends instead of your own face

Trends move faster than evidence. A treatment that is everywhere on social media, or a look that suits one face, says little about whether it suits yours or how well it has been studied. Singapore Medical Council guidelines state that doctors should not offer treatments that are not generally accepted by the profession, except within a formal, approved clinical trial, which is a useful test for anything sold as brand new.

Cheaper treatment abroad is another trend worth thinking through. Prices across the Causeway or further afield can be lower, but follow-up, reviews and complication care are harder from a distance, and you may not know which product was used. Whatever you choose, start from the concern you want to change, and ask what the evidence shows, how often the doctor performs the treatment, and what they would not do on your face.

Where to go

A first-timer's route through our network

SkinRev Lab, at #B1-28 CityLink Mall, 1 Raffles Link, linked underground to City Hall and Esplanade MRT, is a non-invasive aesthetic centre, open daily 11am to 8pm. Every first visit starts with an assessment by an Aesthetic Specialist, prices are published per session (for example, HydraFacial Syndeo from S$288 to S$438 before GST, and waxing from S$18 to S$118 including GST), and if what you describe belongs with a doctor, you are told at that visit. SkinRev Lab does not inject, prescribe or perform medical lasers; WhatsApp +65 8266 9585.

Injectables, medical lasers and prescriptions are by Dr Sin Yong (MBBS Singapore, MRCS Edinburgh, MSc Practical Dermatology Cardiff), SkinRev Lab's Medical Adviser, at IN Eternity Clinic, 9 Scotts Road, #12-01 Pacific Plaza, beside Orchard MRT. Treatment is planned after an assessment and priced at consultation by the clinic; WhatsApp +65 8815 3008. As with any doctor, you are welcome to check his registration on the SMC register yourself.

Sources

References & sources

1. Singapore Medical Council, via Ask.gov.sg. I need to find a registered doctor. How can I do so?
2. Singapore Medical Council. Guidelines on Aesthetic Practices for Doctors (2016 edition).
3. Health Sciences Authority, Singapore. Dangers of DIY aesthetic injectable kits. Consumer safety article.
4. Consumers Association of Singapore. Beauty complaints top CASE's mid-year list as prepayment losses exceed $1.9 million. Media release, 14 August 2026.
5. Master M, Azizeddin A, Master V. Hyaluronic acid filler longevity in the mid-face: a review of 33 magnetic resonance imaging studies. Plast Reconstr Surg Glob Open. 2024;12(7):e5934.
6. Spring LK, Krakowski AC, Alam M, et al. Isotretinoin and timing of procedural interventions: a systematic review with consensus recommendations. JAMA Dermatol. 2017;153(8):802-809.
7. Chan HH, Manstein D, Yu CS, et al. The prevalence and risk factors of post-inflammatory hyperpigmentation after fractional resurfacing in Asians. Lasers Surg Med. 2007;39(5):381-385.

Common questions

Your questions,
answered