Isntree Hyper Niacinamide 20 Serum - 20ml

This serum is best suited for adults concerned with excess sebum, enlarged pores, uneven skin tone, dark spots, and early signs of aging. It is particularly beneficial for combination to oily skin types.

It is generally recommended to avoid using high concentrations of Niacinamide and L-Ascorbic Acid (a potent Vitamin C) in the same routine, as they can potentially interact and cause flushing or reduced efficacy. Consider using them at different times of the day (e.g., Vitamin C in the morning, Niacinamide at night) or consulting with a dermatologist.

Results can vary depending on individual skin concerns and consistency of use. Many users report seeing improvements in oil control and pore appearance within 2-4 weeks, while hyperpigmentation may take longer, typically 4-8 weeks or more, to show significant fading.

While formulated to be effective, the 20% Niacinamide concentration can be potent. Individuals with very sensitive skin should perform a patch test first and consider starting with a lower concentration of Niacinamide or using this product less frequently until tolerance is established.

The recommended usage is 2-3 drops applied to the entire face after toner. Gently pat the serum into the skin for better absorption.

Yes, you can use this serum during the day. Its lightweight formula absorbs quickly. However, remember to always follow up with sunscreen as part of your morning routine, especially when targeting hyperpigmentation.

Please refer to the PAO (Period After Opening) symbol on the product packaging for the specific recommended usage period after opening. Typically, skincare products are best used within 6-12 months of opening if stored correctly.

This can be normal for high-concentration Niacinamide. Start by using it every other day or mixing a drop with your moisturizer. Gradually increase frequency as your skin builds tolerance. If irritation persists, discontinue use.

Ensure you are using the product consistently as directed. Store the product properly away from light and heat. Consider if other products in your routine might be interfering with its efficacy (e.g., very high concentrations of acids).

Allow more time for the serum to absorb fully before applying the next product. Ensure you are using the correct amount (2-3 drops); using too much can increase tackiness. Patting the product in gently can aid absorption.

This could indicate sensitivity. Reduce frequency of use, apply only to affected areas, or stop use. Ensure you are adequately hydrating your skin with a good moisturizer after application. Avoid using other potentially irritating actives in the same routine.