Here are a few hair extension care tips:

Avoid washing your hair extensions too often. Washing them once every two to three weeks is usually sufficient. Use a sulfate-free shampoo and conditioner. Sulfates can strip the hair of its natural oils, which can lead to dryness and tangles.

Be gentle when brushing your hair extensions. Use a wide-tooth comb or your fingers to gently detangle your hair, starting at the ends and working your way up to the roots.

Avoid using heat styling tools on your hair extensions. If you must use heat, be sure to use a heat protectant spray and keep the temperature on the low to medium setting.

Use a deep conditioning treatment on your hair extensions once a week to help keep them moisturized.

There are several types of deep conditioning treatments that can be used to help keep hair extensions moisturized:

1. Hot oil treatment: This involves applying a nourishing oil (such as coconut oil or argan oil) to the hair and wrapping it in a warm towel or using a hair steamer to allow the oil to penetrate the hair shaft.

2. Protein treatment: This involves using a protein-based conditioning treatment to strengthen and repair the hair.

3. Deep conditioning mask: This is a thick, creamy treatment that is left on the hair for an extended period of time (usually at least 20 minutes) to deeply moisturize and nourish the hair.

4. Leave-in conditioner: This is a lightweight conditioner that is applied to the hair and left in to provide ongoing moisture and nourishment.

It is important to use a deep conditioning treatment on hair extensions regularly to keep them moisturized and healthy, as hair extensions can become dry and damaged over time due to styling and environmental factors.

Store your hair extensions properly when not in use. Gently brush them before storing them in a secure location, such as a hair extension box or a hair extension case.

There are several other ways to store hair extensions properly to keep them in good condition:

1. Keep them in their original packaging: If your hair extensions came in a box or pouch, keep them stored in that packaging when not in use. This will help protect them from dirt, dust, and other contaminants.

2. Use a hair extension hanger: There are hangers specifically designed for storing hair extensions. These hangers have loops or clips that you can use to hang the hair extensions off of, keeping them organized and tangle-free.

3. Use a hair extension organizer: Another option is to use a hair extension organizer, which is a storage container with compartments or pockets specifically designed for holding hair extensions. These organizers can be a good choice if you have a lot of hair extensions or if you want to keep them organized by color or type.

4. Braid the hair extensions: If you don't have any of the above storage options, you can braid the hair extensions together and then wrap them in a soft cloth or place them in a plastic bag to keep them from getting tangled.

In general, it's important to keep hair extensions away from heat, moisture, and direct sunlight when your not wearing them, as these can all damage the hair. It's also a good idea to brush them regularly to prevent tangles and knots.

Avoid using products that contain alcohol, as these can dry out the hair and lead to tangles.

There are a few types of hair care products that can dry out hair extensions:

1. Shampoo and conditioner: Choose sulfate-free and moisture-rich products to avoid stripping the hair of its natural oils.

2. Heat styling tools: Overuse of heat styling tools can cause hair extensions to become dry and damaged.

3. Alcohol-based products: Some styling products, such as hairspray and some gels, contain alcohol which can strip hair extensions of moisture and cause them to become dry and brittle.

4. Coloring agents: Coloring or bleaching hair extensions can cause them to become dry and damaged. It's best to consult with a trained stylist before applying any color to your extensions.

It's important to follow the manufacturer's care instructions and use products specifically designed for use with hair extensions to keep them in good condition.

Avoid sleeping with wet hair extensions. Dry them thoroughly before going to bed to prevent tangles and knots.

Consider getting your hair extensions trimmed regularly to keep them looking healthy and to prevent split ends.

By following these tips, you can keep your hair extensions looking luscious and healthy.