Thank you for following the instructions, Janice, as it is very important. To restore the non-stick performance, we recommend soaking the cookware overnight in hot, soapy water and thoroughly washing the surface the next morning. Besides, as you can see on the bottom, the small holes on the iron base plate expose the aluminum bottom of the piece to the air. The exposed aluminum oxidizes in the air at high temperatures due to its nature. Therefore, after repeated use, the aluminum at the bottom will discolor. However, we have a tip for you to clean. Baking soda: Mix a suitable amount of baking soda with water to form a paste. Apply the paste to the oxidized aluminum surface, let it sit for a while. Then gently wipe with a damp cloth, and finally rinse with clean water. If you are still unhappy with the set please know you can exchange or return it anytime as part of the Member’s Mark 100% Satisfaction Guarantee.

Due to the high glossy feature of exterior finishing, the Black will have a few different color reflections under the light from different angles. Please know if you are unhappy with this set, you can exchange or return it anytime as part of the Member's Mark 100% Satisfaction Guarantee.

We are sorry for your experience. Please know all Member's Mark items come with a 100% Satisfaction Guarantee and can be exchanged or returned at any time.

We are sorry to hear about your experience, Ana, and thank you for following the care instruction. We have more tips for you to protect this set. 1) Always use low to medium heat. 2) Always cool down to room temperature before washing. 3) Do not use corrosive cleaning products such as bleach, acids, oven cleaners, etching, etc. they will seriously damage the non-stick coating and deteriorate the finish. 4) Avoid sudden temperature change (thermal shock) on the cookwares and lids. 5) Avoid hard objectives on the cookwares and lids. 6) Avoid sliding accross the stovetops and place it carefully on and off the stovetops. For more details, please refer to the instruction manual. If you are still unhappy, please know you can exchange or return the set anytime as part of the Member's Mark 100% Satisfaction Guarantee.

We're sorry for this experience, Edi. Please know you can exchange or return this set anytime as part of the Member's Mark 100% Satisfaction Guarantee. To restore the performance of the non-stick surface, we recommend a deep cleaning method. This involves soaking the cookware overnight in hot, soapy water and thoroughly washing the surface the next morning. Besides, we have some important tips for you to care this set. 1) Always use low to medium heat. 2) Always cool down to room temperature before washing. 3) Avoid sudden temperature change (Thermal Shock) on the cookware and lids. 4) Keep the open fire just touching the bottom of the pots and avoid open fire climbing onto the wall.