The Pro Strength Urban Skin Rx - void Hydrating Lip Treatment is a highly effective product, as discussed by Kirsten in her video review. Kirsten highlights the key ingredients of this treatment, including peptides, collagen, and avocado oil, which work together to provide intense hydration for the lips. She mentions that she prefers using it at night and finds that it stays on all night, leaving her lips feeling moisturized in the morning. Kirsten also notes that the lip treatment can be worn during the day, as it gives a shiny finish without feeling sticky. She describes the flavor as a sweet and natural taste. Overall, Kirsten recommends the Hydrating Lip Treatment, emphasizing its hydrating properties and non-sticky formula.