Hair Care

How Long Does It Take for Hair to Decompose?

Have you ever wondered how long it takes for hair to decompose? It’s a question that might not come up often in everyday conversation, but it’s an important one to consider. Hair is a common material that we encounter in our daily lives, and understanding how long it takes to decompose can help us make informed decisions about proper disposal.

What is hair made of?

Before we dive into the timeline for hair decomposition, let’s take a closer look at what hair is made of. Hair is composed primarily of a protein called keratin, which also makes up nails, hooves, and feathers. It also contains melanin, a pigment that gives hair its color. The composition of hair affects its decomposition, as keratin is a relatively resistant material that can take longer to break down.

Factors that influence hair decomposition

Several factors can influence the rate of hair decomposition, including climate, soil pH, and the presence of microorganisms. In general, hair decomposes faster in warm, moist environments where there is an abundance of microorganisms that can break down the keratin protein. Hair also decomposes faster in soil with a pH of around 6.5-7.5, which is near neutral. If the soil is too acidic or alkaline, the decomposition process can slow down.

Timeline for hair decomposition

So, how long does it take for hair to decompose? The answer depends on a variety of factors, but in general, it can take anywhere from several months to several years for hair to decompose fully. For example, in a compost pile or a warm, moist environment, hair can decompose in as little as a few months. However, in a landfill, hair can take years or even decades to decompose due to the lack of oxygen and microorganisms present.

Hair that ends up in the ocean or other bodies of water can take even longer to decompose. In saltwater environments, hair can take up to several years to break down due to the lack of nutrients and oxygen. In freshwater environments, hair can decompose faster, but still may take several months to a year.

Importance of proper disposal

Proper disposal of hair is important to reduce environmental pollution. When hair is disposed of improperly, it can end up in landfills, bodies of water, or other natural environments where it can take a long time to decompose. Hair that is not properly disposed of can also contribute to the buildup of microplastics in the environment, as hair can shed small fibers that can be harmful to wildlife.

To properly dispose of hair, consider composting it if possible. Hair can be a valuable addition to compost piles, as it is a source of nitrogen. Alternatively, hair can be disposed of in the trash, but it’s important to avoid throwing it away in a way that allows it to escape into the environment. For example, hair should be placed in a sealed bag or container before being placed in the trash.


In conclusion, understanding how long it takes for hair to decompose is an important consideration for proper disposal practices. While the timeline for hair decomposition can vary depending on the environment, it generally takes several months to several years for hair to break down fully. By properly disposing of hair and other materials, we can reduce environmental pollution and contribute to a cleaner, healthier planet.


Nyla Rose stands at the intersection of beauty and fashion as both a seasoned hairstylist and an influential blogger. Starting her journey in the bustling salons of the city, Nyla honed her skills, specializing in creating transformative hairstyles that not only fit her clients' personalities but also set the pace for emerging trends. But her passion didn't stop at the salon chair.

Eager to share her insights with a broader audience, Nyla embarked on a blogging journey, shedding light on the ever-evolving worlds of beauty and fashion.

Through her blog, she provides a unique blend of practical style advice, in-depth product reviews, and trendspotting, all conveyed with a personal touch that her readers have come to love. Her dedication to the craft and her ability to weave together the realms of hairstyling and fashion writing have cemented her reputation as a trusted voice in both fields.

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