Share your favorite haircare subscription box.

While I don't have personal favorites, there are several popular haircare subscription boxes available that offer a variety of haircare products delivered directly to your doorstep on a regular basis. Here are a few options:

1. **FabFitFun**: While not exclusively focused on haircare, FabFitFun offers a seasonal subscription box that includes a mix of beauty, wellness, and lifestyle products, including haircare items such as shampoos, conditioners, hair masks, and styling products.

2. **CurlKit**: CurlKit is a subscription box curated specifically for those with curly and textured hair. Each month, subscribers receive a selection of full-size and sample-size products tailored to their hair type and needs, including cleansers, conditioners, stylers, and treatments.

3. **Birchbox**: Birchbox offers a monthly subscription box featuring a curated selection of beauty and grooming products, including haircare items like shampoos, conditioners, hair masks, and styling products from both well-known and emerging brands.

4. **Function of Beauty**: Function of Beauty allows you to create customized haircare products tailored to your specific hair type, goals, and preferences. You can subscribe to receive your personalized shampoo and conditioner on a regular basis, with the option to adjust your formula as needed.

5. **The Detox Box by Detox Market**: While not exclusively focused on haircare, The Detox Box offers a monthly subscription featuring clean, non-toxic beauty products, including haircare items made with natural and organic ingredients.

These are just a few examples of haircare subscription boxes available, and there are many more options to explore depending on your preferences, hair type, and budget. Subscribing to a haircare box can be a fun and convenient way to discover new products, try out different brands, and keep your haircare routine fresh and exciting.