ST2 Four Whites

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

ST2 (Sibai, “Four Whites”) is an acupuncture point on the Stomach Meridian. ST2 is located directly below the pupil when the eyes are looking straight forward, in the infraorbital foramen. It is 0.7 cun inferior to ST1. It dispels wind, clears heat, brightens eyes.

Location

ST2 is located directly below the pupil when the eyes are looking straight forward, in the infraorbital foramen. It is 0.7 cun inferior to ST1.

Needling

Perpendicular insertion 0.2-0.5 cun. Avoid the infraorbital nerve and artery.

⚠ Eye risk: needle along the orbital rim only; never angle toward the eyeball.
⚠ Direct/scarring moxa traditionally avoided here (face / sensory organ — scar & burn risk).

TCM functions

Dispels wind, clears heat, brightens eyes.

Indications

Headache, vertigo, eye pain, facial paralysis, trigeminal neuralgia.

Clinical notes

Sibai is a primary point for eye conditions, especially those characterized by pain, itching, and redness, and is also used for facial paralysis. It excels at dispelling wind and clearing heat from the face and eyes, making it beneficial for conditions like blepharitis and trigeminal neuralgia. Its name, 'Four Whites,' alludes to its ability to clear the 'white' of the eye. It is frequently used with ST1 and ST3 for comprehensive treatment of eye and facial issues.

On the Stomach channel

ST2 is one of 45 points on the Stomach Meridian. Nearby points:

Frequently asked questions

Where is ST2 located?

ST2 is located directly below the pupil when the eyes are looking straight forward, in the infraorbital foramen. It is 0.7 cun inferior to ST1.

What is ST2 used for?

ST2 dispels wind, clears heat, brightens eyes. Common clinical indications include headache, vertigo, eye pain, facial paralysis, trigeminal neuralgia.

How is ST2 needled?

Perpendicular insertion 0.2-0.5 cun. Avoid the infraorbital nerve and artery. Caution: ⚠ Eye risk: needle along the orbital rim only; never angle toward the eyeball. ⚠ Direct/scarring moxa traditionally avoided here (face / sensory organ — scar & burn risk).

Which meridian is ST2 on?

ST2 is a point on the Stomach Meridian (Zú Yángmíng Wèijīng).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.