The Collagen Lifting Eye Cream by TIRTIR has impressed Lizeth with its noticeable brightening effect. In her video review, she highlights the attractive packaging and the convenient pump dispenser. Lizeth applies the cream around her eyes and allows it to settle in, indicating its ease of use. Overall, the product seems to deliver on its promise of brightening the under-eye area. However, it's important to note that the transcription provided does not mention any potential drawbacks or further benefits. Nonetheless, based on Lizeth's positive experience, the Collagen Lifting Eye Cream by TIRTIR appears to be a promising option for those seeking a brighter and more rejuvenated eye area.