Hi Viivi,
I’m sorry to hear that the product didn’t meet your expectations. The effectiveness of products is of course always individual, and long-term effects are rewarded ❤️ Retinol products typically have a short shelf life, as retinol is a sensitive ingredient and can lose its potency when exposed to light, oxygen, or moisture.
Slow absorption can be influenced by the product's composition, such as squalane, which is oil-based and absorbs a bit differently depending on skin type. To improve comfort of use, we recommend applying the product in the evening to clean, dry skin, and if necessary, following up with a light moisturizer.
If you didn’t experience the desired results, we’d be happy to help you find a product that suits your skin type better. Please reach out to customer service@lyko.fi if you have any further questions! 😊