By LIV Clinic · Medically reviewed by Dr. Narathai Vichienkalayarut, M.D. · Published August 18, 2026

Your birth certificate is a poor guide here — your collagen is a much better one.

At what age should you start skin tightening? There is no fixed age — most people begin in their mid-30s to 40s, when collagen loss starts to show as early laxity, though the right time depends on your skin rather than your birthday; treatments work best on mild to moderate laxity, not advanced sagging.

Why there is no fixed age

Skin, not birthdays

People age at very different rates depending on genetics, sun exposure and lifestyle, so the right time depends on your skin’s condition rather than a number.

Collagen declines early

Collagen production begins declining gradually from around the mid-20s, but visible laxity usually appears much later.

When most people start

Mid-30s to 40s

This is when early laxity commonly becomes noticeable — a slightly softer jawline, less firmness in the cheeks — and when energy-based tightening tends to be most rewarding.

Earlier in some cases

Those with significant sun exposure, rapid weight loss or naturally thin skin may notice changes sooner.

Why starting on mild laxity works better

The treatments have limits

Both HIFU and radiofrequency work by stimulating your own collagen, and they suit mild to moderate laxity — not advanced sagging.

Better raw material

Younger skin generally responds more readily to collagen stimulation, so results can be more satisfying.

Signs it may be time

Consider a consultation if you notice:

• A softening or less defined jawline
• Cheeks that look flatter or less firm
• Crepey texture on the neck or around the eyes
• Skin that feels less springy than it did
• Early jowls forming
• Laxity after weight loss

Rough guide by decade

A guide only — your skin, not your age, decides.

What to do before you need treatment

Prevention first

Daily broad-spectrum sun protection, not smoking, good sleep and sensible skincare protect collagen far more cheaply than any device.

Especially in the tropics

On Koh Samui, strong year-round UV makes daily sun protection the single most valuable habit for delaying laxity.

Is it possible to start too early?

Yes, in the sense of wasted spend

Treating skin with no meaningful laxity is unlikely to give a noticeable benefit, so an honest assessment matters more than a preventative impulse.

A doctor should say no

A good clinic will tell you if you do not need treatment yet — and suggest prevention instead.

Deciding when to start

A sensible approach:

1. Prioritise daily sun protection from your 20s onward.
2. Have a consultation when you first notice laxity, at any age.
3. Ask honestly whether you would benefit yet.
4. Start with mild to moderate laxity for the best response.
5. Agree realistic expectations for a gradual change.
6. Plan maintenance rather than one-off treatment.

Skin tightening at LIV Clinic Koh Samui

At LIV Clinic, Dr. Narathai will tell you honestly whether tightening would help yet — and which option suits your skin. Read our guide to choosing a treatment, explore HIFU, or book a consultation.

Frequently asked questions

Safety and consultation

Skin tightening treatment is a non-invasive, energy-based medical procedure and, like any device treatment, carries some risk — common temporary effects can include redness, mild swelling, tingling or tenderness, and less common reactions are possible. Results vary from person to person, and no specific outcome can be promised. This article is general information, not medical advice.

At LIV Clinic, every treatment begins with an in-person assessment by Dr. Narathai Vichienkalayarut, M.D., who reviews your skin, medical history and goals before recommending a personalized plan. Book a consultation to find out whether this treatment suits you.