There are several advantages to using aluminum for eyebrow brush tubes:

Lightweight: Aluminum is much lighter than other metals, making it easier to handle and less burdensome to wear. This is especially important for eyewear that is worn for long periods of time.

Durable: Aluminum is a strong and durable material that can withstand daily wear and tear. It is resistant to corrosion and can maintain its shape over time, making it a good choice for eyewear.

Adjustable: Aluminum brow tubes can be easily adjusted to fit different head sizes and shapes, making them more comfortable and secure to wear.

Hypoallergenic: Aluminum is a hypoallergenic material, meaning it is unlikely to cause allergic reactions in people with sensitive skin. This makes it a good choice for eyewear that will be worn in close contact with the skin.

Cost-effective: Aluminum is relatively inexpensive compared to other metals, making it a cost-effective choice for brow tubes.

Overall, aluminum brow tubes offer a combination of strength, durability, comfort, and affordability, making them a popular choice for eyewear.