Take lemon juice, for example. The ingredient, which is known for its citrusy scent and astringent properties, used to be a popular component of DIY hacks. However, in recent years, using lemon juice for the skin has become controversial due to its side effects and risks. Why? Well, applying straight lemon juice can do more than good, especially before going out in the sun. The practice can cause the following issues, according to the pros: But first, make sure you’re practicing safe sun habits like wearing hats and SPF. This is important for everyone, of course, but it’s especially crucial if you’re using lemon on the skin. Here’s how to safely reap the skin benefits of lemon: