28 February 2026
The period after Tet is peak season for acne breakouts. In Da Nang, we see a sharp rise in the number of clients looking for acne treatment in the first one to two months of the year. The cause isn't just a change in cosmetics; it is mainly linked to physiological imbalances in the skin after a period of irregular habits.
This article explains the mechanism behind post-Tet acne and outlines a sustainable approach to treatment.
Why do breakouts flare up after Tet?

1. Increased sebum from a diet high in sugar and fat
Eating lots of sweets, soft drinks and fried food raises insulin and IGF-1. These two factors stimulate the sebaceous glands to work harder, leading to excess oil on the skin's surface – the starting point for clogged pores.
2. Stress and lack of sleep increase inflammation
Cortisol rises as you return to work, weakening the skin barrier. Acne-causing bacteria (C. acnes) can then grow more easily and trigger inflammation.
3. A disrupted cell renewal cycle
Night-time is when the skin recovers. Staying up late for long periods disrupts natural exfoliation, creating an abnormally thick layer of dead skin – the cause of closed comedones and blackheads.
Post-Tet acne is therefore the result of excess oil, clogging and inflammation combined. Treatment needs to address this mechanism rather than focusing only on extractions.
Treating acne the right way: focus on the skin's foundation
An effective acne treatment protocol needs to cover 4 elements:
- Proper cleansing and correct technique for clearing clogged pores
- Controlling inflammation
- Regulating sebaceous gland activity
- Restoring the skin barrier

If only the "visible" part (the acne plug) is dealt with, the underlying inflammation remains and the acne will return within a few weeks. The core of modern acne treatment is bringing the skin back to physiological balance, which reduces the chance of new lesions forming.
Acne treatment at Lunaria Skin Lab – personalised and closely monitored
At Lunaria Skin Lab, our acne treatment process is built on personalisation and continuous monitoring.

1. A Skin Master follows the entire process
Each client is looked after by one Skin Master from consultation through to adjustments of the treatment plan. This makes it possible to:
- Accurately assess the type of acne and the degree of inflammation
- Clearly explain the mechanism behind your acne
- Build a protocol that suits your actual skin condition
- Adjust the treatment as your skin changes
This close follow-up avoids fragmented or directionless treatment.
2. Acne treatment – focused on skin health from within
Lunaria's treatment philosophy isn't about "clearing acne fast"; instead, it prioritises:
- Stabilising the skin
- Reducing inflammation for the long term
- Strengthening the skin's ability to heal itself
- Limiting recurrence over the long term
When the skin is healthy, the risk of new breakouts falls significantly, and post-inflammatory marks and scarring are reduced.
When should you start acne treatment?

Consider getting a skin consultation if you experience:
- Inflamed acne that keeps appearing
- Dense closed comedones that keep coming back
- Uncontrollable oiliness
- No improvement despite treating it yourself at home
Early intervention reduces the risk of dark marks and pitted scars – two complications that are much harder to treat than the original acne.
Treating post-Tet acne isn't just about dealing with surface lesions; it requires addressing the skin's physiological mechanisms and underlying inflammation. Choosing a clinic with expertise, a personalised protocol and someone to follow your progress closely is what determines long-term results.
Lunaria Skinlab – Da Nang approaches acne treatment on the basis of dermatological science and lasting skin health, rather than short-term fixes.
Book a skin analysis to have your skin assessed and get an acne treatment plan that suits your skin.
Start your healthy-skin journey
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