What it is
Citrus aurantifolia fruit juice is the liquid pressed from limes, a citrus fruit. In sunscreen formulas it is included in small amounts as a botanical conditioning ingredient that contributes natural acids, sugars, and water-soluble components. It is a supporting additive rather than a UV filter or primary functional ingredient.
Safety & warnings
Citrus juices contain naturally occurring acids and aromatic constituents, so they can be mildly irritating to sensitive skin and may contribute fragrance allergen potential. Citrus peel and oil are well known for furocoumarins that can cause photosensitivity; fruit juice generally contains far less than peel oil, but people with reactive or sensitive skin may wish to be cautious. As used in finished sunscreens it is present at low levels.
Origin & sourcing
Natural; obtained by expressing or squeezing the fruit of the lime plant, Citrus aurantifolia.
Questions everyone asks
What is citrus aurantifolia fruit juice?
It is lime juice, used in small amounts as a botanical skin-conditioning ingredient rather than as a sun filter.
Can lime juice in skincare cause sensitivity?
Citrus ingredients carry naturally occurring acids and aromatic compounds that can irritate sensitive skin, so reactive-skin users may want to patch test, though juice contains less of the photosensitizing compounds found in citrus peel oil.