Do the cupping marks mean toxins are being removed?

No. The circular marks are bruising - tiny blood vessels breaking under the suction - not toxins, 'dampness' or 'cold' leaving the body. Darker marks do not mean you are sicker or that the treatment worked better. They usually fade within a few days to about two weeks.

Is wet (bleeding) cupping safe?

Because wet cupping breaks the skin, it carries a real risk of skin and bloodborne infection if hygiene is poor. Several infections have been reported after it. Only consider it with a TCMPB-registered practitioner using sterile, single-use equipment, and avoid it if you have bleeding or immune problems.

Does cupping or gua sha actually relieve pain?

The evidence is weak and mostly short-term. Dry cupping and gua sha may temporarily ease musculoskeletal pain or tension, but high-quality proof is limited. They are not proven cures and should not replace medical assessment of ongoing pain.

Who should avoid cupping and gua sha?

Be cautious or avoid them if you take blood thinners, have a bleeding disorder, fragile or broken skin, skin infection, poorly controlled diabetes, or a clot. Avoid the abdomen and lower back in pregnancy. Check with your doctor if unsure.

Will I have marks at work or the gym?

Often yes. Cupping leaves round marks and gua sha leaves red or purple streaks that can last several days to two weeks. They are temporary bruising and not harmful, but ask your practitioner to keep them out of very visible areas if that matters to you.

Cupping & Gua Sha in Singapore: Benefits, Evidence & Safety

Written & reviewed by the BestDoctors.sg editorial team · Last updated 3 Sep 2026 · General information, not medical advice

Quick answer. Cupping uses suction cups (dry, wet/bleeding, or fire) and gua sha uses a smooth tool to scrape the skin, both common TCM therapies in Singapore. Evidence is mostly weak and short-term: they may give temporary relief of musculoskeletal pain and tension, but high-quality proof is limited. The marks left are bruising from broken small blood vessels, not ‘toxins’ being released. Dry cupping and gua sha are generally low-risk; wet (bleeding) cupping breaks the skin and carries infection risk. People on blood thinners, with bleeding disorders, fragile skin or who are pregnant should be cautious. Use TCMPB-registered practitioners and keep seeing your doctor for serious symptoms.

Not sure which best acupuncture & tcm clinic you need?

Message our care team on WhatsApp. Tell us what’s going on and we’ll help you find the right best acupuncture & tcm clinic — free, with no obligation.

Chat with our care team on WhatsApp

Not sure who to see? Find the right specialist →

In a medical emergency, or for severe or sudden symptoms such as breathing difficulty, chest pain, fainting or stroke signs, call 995 immediately.

Cupping and gua sha are popular Traditional Chinese Medicine (TCM) therapies in Singapore, often used alongside acupuncture or tuina for muscle tension, aches and ‘wind’. Cupping places suction cups on the skin; gua sha uses a smooth-edged tool (often ceramic or jade) to stroke and scrape lubricated skin.

This guide explains what each therapy is, what the evidence does and does not support, why the marks are bruising rather than ‘toxins’, who should avoid them, and key safety points – especially for wet (bleeding) cupping. As with all TCM, these are complementary therapies: keep seeing your doctor for serious or persistent symptoms.

At a glance

Cupping and gua sha: types, claims and evidence
Therapy	What it is	Evidence & key safety note
Dry cupping	Suction cups on skin; no skin broken	Weak evidence; may give short-term musculoskeletal relief. Low risk; leaves temporary circular marks (bruising)
Fire cupping	Flame briefly heats cup to create suction, then placed on skin	Similar weak evidence to dry cupping; added burn risk from the flame
Wet / bleeding cupping (hijama)	Skin is pricked, then cupped to draw a little blood	Limited evidence; breaks skin so carries real infection/bloodborne risk – hygiene is critical
Gua sha	Smooth tool scrapes lubricated skin	Weak/limited evidence; may ease neck/shoulder tension short-term. Marks are bruising, not 'toxins'

What cupping and gua sha are

Cupping applies suction cups to the skin to draw it (and underlying tissue) upward. Dry cupping uses suction only; fire cupping briefly warms the cup with a flame to create suction; wet or bleeding cupping (hijama) involves pricking the skin and then cupping to draw out a small amount of blood.

Gua sha (‘scraping’) uses a smooth-edged tool to repeatedly stroke oiled skin, usually over the neck, shoulders or back, producing redness or small bruises (sha). Both are traditionally used for pain, stiffness, ‘heatiness’ or ‘wind’, and are often combined with acupuncture or tuina massage in Singapore TCM clinics.

Claimed benefits versus the evidence

Honest summary: the scientific evidence for cupping and gua sha is mostly weak and short-term, and many studies are small or at high risk of bias.

There is some early evidence that dry cupping may reduce musculoskeletal pain (for example neck or back pain) in the short term, but reviews note the research quality is generally poor.
Gua sha may give short-term relief of neck and shoulder tension, but again high-quality evidence is limited.
Claims that cupping or gua sha treat infections, organ disease, cancer or boost immunity in any meaningful way are not supported by good evidence.

These therapies may help you feel temporarily looser or more comfortable, but they are not proven cures and should not delay needed medical care.

Those marks are bruising, not 'toxins'

The circular marks from cupping and the red or purple streaks from gua sha are caused by tiny blood vessels under the skin breaking and leaking – in other words, controlled bruising and superficial bleeding. They are not ‘toxins’, ‘cold’, ‘dampness’ or ‘acid’ being pulled out of the body, despite common claims.

The colour and intensity reflect things like suction strength and how easily you bruise, not how ‘toxic’ or ‘sick’ you are. Marks usually fade over several days to about two weeks. Darker marks are not a sign of a more successful treatment.

Safety and who should avoid these therapies

Dry cupping and gua sha are generally low-risk when done gently by a trained practitioner, but there are real cautions:

Wet (bleeding) cupping breaks the skin, which increases the risk of skin infection, abscesses and bloodborne infection if tools, blades or the area are not properly sterile. Single-use, sterile equipment and high hygiene standards are essential; reused gua sha tools or blades without proper disinfection are a real risk.
Fire cupping adds a burn risk from the flame and hot cup rim.
Possible side effects include bruising, soreness, skin irritation, blistering and, rarely, burns or infection.

Take extra care or avoid if you: take blood thinners or have a bleeding disorder; have fragile, inflamed, broken or sunburnt skin, eczema or skin infection; have poorly controlled diabetes; are pregnant (avoid the abdomen and lower back); or have a deep vein thrombosis. When in doubt, check with your doctor first.

Cost ranges, registration and when to see a doctor

Cupping and gua sha are often offered as add-ons to an acupuncture or tuina session, or as short standalone treatments. Costs in Singapore vary widely by clinic and session length and can range from a modest add-on fee to the price of a full TCM session; confirm the total fee before treatment. We do not endorse specific clinics or prices.

Use a TCMPB-registered TCM physician or acupuncturist with a valid Practising Certificate, and confirm single-use/sterile equipment, especially for wet cupping.
These therapies are complementary. See a doctor – not a TCM hall – for red flags such as severe or worsening pain, fever, chest pain, breathlessness, numbness or weakness, a spreading skin infection, or unexplained weight loss.

Related guides

Sources

Last updated 22 June 2026. Prices are typical market ranges gathered from the cited sources and vary by clinic, doctor and individual case — they are not quotes. This guide is general information, not medical advice; always consult a qualified, MOH-accredited doctor before any treatment.

Part of our Allied health & therapy guides · Browse all health topics