Lip essence should ideally be applied after you've cleansed and toned your face but before you apply any heavy moisturizers or oils. This is because lip essences are typically formulated with ingredients that deeply hydrate and nourish the lips, and you want these ingredients to be able to penetrate your lips without any barriers.

Here's a simple step-by-step guide to incorporating lip essence into your skincare routine:

1. Cleanse: Start with a clean face. Use a gentle cleanser that suits your skin type.

2. Tone: Apply a toner to balance your skin's pH and prepare it for the following skincare steps.

3. Lip Essence: Now is the perfect time to apply your lip essence. Gently dab it onto your lips and let it absorb.

4. Serum: Apply your serum of choice to the rest of your face. This is a more targeted treatment for specific skin concerns.

5. Moisturize: Follow with a moisturizer to lock in the hydration and all the beneficial ingredients from your previous steps.

6. Oils/Heavy Creams: If you use any heavier products like facial oils or rich creams, apply them last. They can help seal in all the previous layers of skincare.

7. Sunscreen (AM): If it's daytime, always finish with a broad-spectrum sunscreen to protect your skin from UV damage.

Remember, the key to effective skincare is consistency. Make sure to apply your lip essence daily for the best results.