Medicinally, chickweed is most commonly used for skin ailments in which there is inflammation that must be cooled—abrasions, non-serious burns, even acne and psoriasis. It’s mild astringent properties are even considered useful for drawing out splinters. The entire plant—leaves, herbs, and stems—are used in the preparation.
The most common way to apply herbs topically is via a salve. it's soothing, calming, astringent effect on the skin can be attributed to it's rich mineral (calcium, magnesium, potassium, and zinc) content.