Lemon juice contains natural alpha hydroxy acids (AHAs), which can help exfoliate the skin and brighten complexion. However, lemon juice can also be irritating to some skin types, especially if used undiluted or on sensitive skin. It's essential to do a patch test before using this toner on your face and to avoid sun exposure after application, as lemon juice can increase skin sensitivity to sunlight.
Always consult with a dermatologist before introducing new skincare products into your routine, especially if you have sensitive skin or any existing skin conditions.