Keeping your blush on all day can be a bit of a challenge, especially if you have oily skin or if you're in a humid environment. However, there are several strategies you can use to extend the longevity of your blush stick.

1. **Prep Your Skin**: Start with a clean, exfoliated face. This will ensure that your blush stick adheres better to your skin.

2. **Use a Primer**: A primer can create a smooth base for your makeup and help it last longer. Look for a primer that's suited to your skin type. For example, if you have oily skin, a mattifying primer can help control oil and keep your blush in place.

3. **Apply Foundation**: After primer, apply your foundation. This will create an even canvas for your blush and help it stick better.

4. **Layer Your Blush**: Start with a light layer of your blush stick and then build up the color as needed. This can help the blush adhere better to your skin and last longer.

5. **Set With Powder**: After applying your blush, set it with a translucent setting powder. This will help lock the blush in place and prevent it from fading throughout the day.

6. **Use a Setting Spray**: Finally, a setting spray can help seal your makeup and extend its longevity. Look for a setting spray that's suited to your skin type and the finish you want (e.g., matte or dewy).

Remember, the key to long-lasting makeup is to layer your products and give each layer time to set before moving on to the next. This will help your makeup adhere better to your skin and last longer.