The sparkle emoji is a four-pointed star cluster that is often used to add a little more glitz and glam to designs. Here are some details about the sparkle emoji and its uses:

Positive uses:

• Emphasis: On TikTok, the sparkle emoji is used like italics to sandwich a word or name for a little extra emphasis.
• Excitement: The sparkle emoji can be added to the end of a sentence for a little more pizazz to show excitement about something.
• Magic: Sparkles are the universal symbol for magic, and the sparkle emoji is no different. It can be used to add some extra glitter and whimsy to a message talking about anything fantastical.

Negative uses:

• None of the search results indicate any negative uses of the sparkle emoji.

Ingredients or materials:

• None of the search results provide information about the ingredients or materials used to create the sparkle emoji.

Overall, the sparkle emoji is a fun and glittery emoji that can be used in a variety of ways to add emphasis, excitement, and magic to messages. However, it is important to note that it should not be used to substitute important information in UX design.