Chitin is widely used in agriculture as a natural biostimulant and plant growth enhancer. When applied to crops, it strengthens plant cell walls and activates defense mechanisms, reducing the need for synthetic pesticides. It is also used in seed coatings to protect against fungal pathogens and improve germination rates.

In wastewater treatment, chitin serves as an effective adsorbent for heavy metals and dyes due to its ability to bind contaminants. This makes it valuable in environmental cleanup and industrial filtration processes.

In the medical field, chitin and its derivatives are used in wound healing products such as dressings and gels. It promotes tissue regeneration, controls bleeding, and has antimicrobial properties that help prevent infection.

The cosmetic industry uses chitin in skincare formulations for its moisture-retaining and film-forming abilities, improving texture and enhancing product performance.

Additionally, chitin is used in food packaging as a biodegradable coating that extends shelf life by inhibiting microbial growth and reducing spoilage.