Applying lemon juice directly to your face after shaving is generally not recommended. While lemon juice possesses antibacterial properties and can help reduce redness and prevent infection associated with razor burn (as noted in several sources such as this article), its high acidity can irritate already sensitive, freshly shaven skin. This is especially true if you have sensitive skin or existing razor burn.
Several sources suggest using gentle aftershave balms or moisturizers to soothe the skin after shaving. These products are formulated to be less irritating and provide the necessary hydration and protection. Examples include the Chagrin Valley Soap & Salve's aftershave balm (link) or Jason Naturals' refreshing face moisturizer and aftershave balm (link).
While some sources mention using lemon juice for specific purposes (like removing henna or as a part of a homemade scrub), these uses are different from applying it directly after shaving. Direct application of lemon juice after shaving carries a risk of increased irritation and inflammation.
If you experience razor burn, it's best to use products specifically designed to soothe and heal the skin, rather than relying on potentially irritating substances like lemon juice. Always test any new product on a small area of skin before widespread application.
In short: While lemon juice has antiseptic qualities, it's too acidic for application directly after shaving. Opt for a dedicated aftershave balm or moisturizer instead.
