Stomach 2 (ST 2) Si Bai — Four Whites

This point, below the eye, benefits the eyes and face and dispels wind.

Stomach 2 (ST 2) Si Bai 四白 — Four Whites

Location

On the face, in the depression of the infraorbital foramen, directly below the pupil.

Anatomy

At the infraorbital foramen, in orbicularis oculi; the infraorbital artery and vein; the infraorbital nerve.

Actions & Functions

  • Benefits the eyes and dispels wind
  • Benefits the face and stops pain and twitching

Indications

Red and painful eyes, blurred vision, twitching of the eyelids, facial paralysis and twitching, and trigeminal neuralgia.

Needling

0.2-0.3 cun perpendicular, or 0.3-0.5 cun obliquely; do not needle into the foramen.

Moxibustion Suitability

Moxibustion is generally not used on the face.

Point Combinations

With ST-7 and LI-4 for facial paralysis and trigeminal neuralgia.

Classical Text References

A local point for the eye and face.

Cautions & Contraindications

Avoid deep insertion into the infraorbital foramen.

Latest Research

Latest peer-reviewed research on this point will be summarised here, with citations linked to PubMed, via our research integration.

About Attilio

Doctor of Chinese medicine, acupuncture expert and author of My Fertility Guide and My Pregnancy Guide.

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PubMed research

Acupuncture Shows Sustained Benefits for Chronic Daily Headache Prevention in Adults, Meta-Analysis Finds

Research summary (Acupuncture): Utility of Acupuncture Therapy for Adult Chronic Daily Headache Prophylaxis: A Systematic Review and Meta-Analysis. - Medical science monitor : international medical journal of experimental and clinical research, 2026.