I found several search results related to soap products, but none of them specifically mention a product called "skinspa." However, I can provide some general information about soap products, including their ingredients and potential positive and negative effects on the skin.

Ingredients or Materials

• Some soap products may contain harmful chemicals, such as cocamidopropyl betaine, butylatedhydroxy anisole, butylated hydroxytoluene, SLS, and SLES.
• Other soap products may contain natural ingredients, such as olive oil, coconut oil, honey, oats, and silk.
• Some soap products may also contain exfoliating materials, such as pumice or exfoliating gloves.

Positive Effects

• Soap products can help to cleanse the skin and remove dirt, oil, and bacteria.
• Some soap products may contain natural ingredients that can nourish and moisturize the skin.

Negative Effects

• Some soap products may contain harmful chemicals that can cause skin irritation or trigger allergies.
• Long-term usage of soap products containing SLS can cause the skin to become dry and irritated.

In general, it is important to read the ingredients list on soap products and avoid those that contain harmful chemicals. It is also important to choose soap products that are appropriate for your skin type and any skin conditions you may have.