
Most teenagers get some acne, and most of it is manageable. Dr Sin Yong explains when skincare is enough, when to see a doctor, and how consent works for under-18s at IN Eternity Clinic on Orchard Road.
WhatsApp to Enquire →Key facts ↓Mild teenage acne often improves with simple skincare and an over-the-counter benzoyl peroxide or salicylic acid product used consistently for eight to twelve weeks. See a GP if it is not improving, is painful, or is affecting confidence. Deep, cystic or scarring acne needs prompt medical treatment. Under-18s attend with a parent or guardian, who gives consent.
Acne is very common in adolescence, and it is not caused by dirt or poor hygiene. At puberty, rising androgen hormones make the skin’s oil glands larger and more active. Skin cells lining the hair follicles shed less cleanly and form plugs, seen as blackheads and whiteheads. Skin bacteria that live in these follicles then trigger inflammation, which turns plugs into red spots, pus-filled spots and, in some, deep painful lumps.
Family history plays a part, as do some cosmetics, hair products, friction from sports gear or masks, and, in girls, the menstrual cycle. Diet is often blamed; the evidence suggests that high-sugar diets and some dairy may contribute for some people, but strict diets rarely clear acne on their own. Squeezing spots makes inflammation and marks worse.

For mild acne, mostly blackheads, whiteheads and a few small spots, a simple routine often helps: a gentle cleanser twice a day, a non-comedogenic moisturiser and a daily sunscreen. An over-the-counter product containing benzoyl peroxide or salicylic acid can be added, starting every other day to limit dryness and building up as tolerated. Benzoyl peroxide can bleach towels and pillowcases, which is worth knowing in advance.
The rule parents most often need to hold is patience. Acne treatments take eight to twelve weeks to show their effect, and some treatments cause dryness or a little irritation in the first weeks. Switching products every few days, or layering many actives at once, usually causes irritation rather than progress. If after about three months there is little improvement, it is time to see a doctor.
“With teenagers, my job is mostly prevention. Controlling acne early means the scars never form, and that is far easier than treating them at twenty-five.”
See a GP or polyclinic doctor if the acne is not improving after a fair trial of skincare, if spots are painful or spreading to the chest and back, if marks are being left behind, or if your teenager is upset or withdrawing because of their skin. A doctor can prescribe stronger topical treatments, such as topical retinoids like adapalene (a prescription medicine), combinations with benzoyl peroxide and topical antibiotics, and, where needed, a course of oral antibiotics alongside topical treatment.
In Singapore, a polyclinic or GP can also refer to a dermatologist at a public specialist centre when acne is severe or not responding. For girls with acne that flares with periods, irregular cycles or excess hair growth, the doctor may check for hormonal causes and discuss hormonal treatment, which is a prescription medicine decision.
Acne on the chest and back is common in teenagers who play sport, wear tight or synthetic clothing, or use heavy hair products, and it often needs the same medical approach as facial acne. Showering soon after exercise, loose cotton clothing and rinsing conditioner off the back help, but they rarely clear established acne on their own. Bring a list of the products already tried to the appointment; it saves time and avoids repeating what has not worked.

Deep, cystic or scarring acne needs effective medical treatment quickly, because every month of deep inflammation risks lasting marks. Isotretinoin, a prescription medicine, is the most powerful option for severe or scarring acne. It needs careful supervision: blood tests, strict pregnancy prevention for girls, monitoring of mood and attention to dryness. It is prescribed by doctors experienced in its use, and sometimes by dermatologists.
At IN Eternity Clinic, acne is assessed and treated medically first, with light-based treatments used only where they genuinely help as support, for example to calm inflammation. Procedures for marks and scars, such as lasers or microneedling, come later, once breakouts are controlled. Dr Sin Yong will refer to a dermatologist where the acne is severe, unusual or not responding, or where another condition, such as fungal folliculitis, is the real cause.
| Skincare at home | GP or polyclinic | Doctor-led acne plan | |
|---|---|---|---|
| Suits | Mild acne | Mild to moderate, or not improving | Moderate to severe, marks, scarring risk |
| Tools | Gentle routine, over-the-counter actives | Prescription topicals, oral antibiotics, referral | Full medical plan, supporting light treatments, scar planning |
| Judge after | About three months | About three months | Reviewed every few weeks |
Severe or unusual acne may also be referred to a dermatologist.
At IN Eternity Clinic, patients under 18 attend their consultation with a parent or legal guardian, who gives consent for any treatment. Dr Sin Yong also explains the plan directly to the teenager and asks for their own agreement, because a plan a young person does not understand or want is unlikely to be followed. Teenagers are encouraged to ask questions and to say if a treatment is uncomfortable or affecting them.
Cosmetic procedures for appearance alone are approached with particular caution in young people. The focus for teenagers is on treating acne as a medical condition and preventing scars, not on beauty treatments. Any procedure is discussed with the parent present, and the family is given time to consider it before deciding.
Acne can affect how young people feel about themselves, and studies link it with higher rates of low mood and anxiety. Take it seriously even if it seems mild to you; what matters is how it feels to your teenager. Avoid comments about their skin, diet or hygiene, which tend to land as blame. Help with practical things instead: buying the agreed products, gentle reminders, and getting to appointments.
If your teenager seems persistently low, is avoiding school or friends, or says anything about self-harm, speak to a doctor promptly, separately from the acne plan if needed. Good acne care treats the person as well as the skin.
It also helps to agree a simple routine together and keep it boring. A teenager who understands why each product is used, and how long it takes, is more likely to stick with it. Reviews every few weeks give a chance to adjust the plan, check for side effects and talk about how things are going, rather than waiting for a crisis.
Age matters less than severity. See a doctor if acne is not improving after about three months of consistent skincare, if spots are deep, painful or leaving marks, or if it is affecting your child’s mood or confidence. Very early acne before puberty is unusual and worth checking with a doctor.
Yes, for acne and related medical skin concerns. Patients under 18 attend with a parent or legal guardian, who gives consent for treatment. Dr Sin Yong also explains the plan directly to the teenager and asks for their own agreement before anything is started.
A gentle cleanser, a non-comedogenic moisturiser and daily sunscreen, plus a product containing benzoyl peroxide or salicylic acid, introduced slowly to limit dryness. Use them consistently for eight to twelve weeks before judging. Avoid harsh scrubs and layering many active products at once.
Isotretinoin, a prescription medicine, is used in teenagers with severe or scarring acne under careful supervision. It requires blood tests, strict pregnancy prevention for girls, monitoring of mood and management of dryness. Whether it is appropriate is decided by a doctor experienced in its use after discussing benefits and risks with the family.
The risk depends on how deep, inflamed and long-lasting the acne is, and on family tendency. Blackheads and small spots rarely scar; deep nodules and cysts often do. Early, effective treatment is the most reliable way to prevent scars, which is why moderate and severe acne should not be left to settle on its own.
Cost depends on the severity of acne, whether prescription medicines are needed, how often reviews are required and whether any supporting treatments are recommended. After assessment, a written quote lists each component. Many teenagers with mild to moderate acne need only medicines and reviews, not procedures.
Not as the main treatment. Facials can help with congestion, and some light-based treatments can support medical care by calming inflammation, but the core of acne treatment is medical. Procedures for marks and scars are considered once breakouts are controlled, with a parent involved in the decision.
IN Eternity Clinic, 9 Scotts Road, #12-01 Pacific Plaza, Singapore 228210. By appointment with Medical Director Dr Sin Yong. Monday to Saturday, 11am to 8pm. WhatsApp or call +65 8815 3008.
These sources describe mechanisms and general evidence. They are not a promise of any individual result; suitability is decided at an in-person assessment.