How strong is the waterproof ability of the hose cover?

The development speed of cosmetic covers has exceeded people's imagination. In daily life, we can see the application of hose covers everywhere, such as shampoo, cosmetics, dishwashing detergent, etc. We can see the role that hose covers play in our daily lives.
From the simple plastic round cap to the diversified spray pump and hose cap, the change in this process is based on the overall needs of people. The round bottle cap is less leakproof than the hose cap for cosmetics. The hose cover can prevent external moisture from directly entering the bottle. For the storage of cosmetics, the hose cover can better prevent external moisture and bacteria from entering the cosmetics. Moreover, it has gas barrier properties, which can effectively prevent the infiltration of oxygen and odorous gases, as well as prevent the leakage of content fragrance and effective ingredients.
Therefore, the waterproof ability of the hose cover is relatively strong, which can directly improve the level of cosmetic packaging and user experience.