Question 1

Will this serum be too strong or drying for my sensitive skin?**

Accepted Answer

The 10% concentration is potent. While many with sensitive skin use it successfully, a significant number of Reddit users recommend **patch testing and starting slowly** (2-3 times a week) to assess tolerance. It's common to experience slight tingling or dryness initially. If you have known sensitivity or very dry skin, you might consider a gentler formula with a lower niacinamide percentage.

Question 2

How do I prevent it from pilling or balling up with my other skincare?**

Accepted Answer

Pilling is a frequent mention in social media reviews, usually due to layering. To avoid it, apply a **thin layer** to completely dry skin and let it absorb fully for 1-2 minutes before applying your next product (like moisturizer or sunscreen). Using lighter, water-based products on top also helps. Many TikTok users find patting it in rather than rubbing eliminates the issue.

Question 3

How long does it take to see results for oiliness and pore appearance?**

Accepted Answer

Consistency is key. Most reviewers notice improved **oil control within a week**. For visible **pore refinement and smoother texture**, allow 4-8 weeks of daily use. This aligns with the skin's natural renewal cycle. It's a treatment serum, not an instant fix, so patience pays off.

Question 4

Can I use this serum with Vitamin C or retinol?**

Accepted Answer

Yes, but timing matters. Niacinamide pairs well with most actives. A popular routine mentioned by skincare enthusiasts is to use Vitamin C in the AM and this Niacinamide serum in the PM. If using with retinol, apply niacinamide first, let it dry, then follow with your retinol product. This can help buffer potential irritation.

Question 5

What's the main difference between this and The Inkey List's Niacinamide serum?**

Accepted Answer

Both are popular, affordable options. Based on countless comparison threads, The Ordinary's formula is often described as more effective for **significant oil control and blemish prevention** but has a thicker, stickier texture that can pill. The Inkey List's version is frequently cited as having a **lighter, more cosmetically elegant feel** that layers easily, making it a favorite for those prioritizing texture or with less oily skin. Your choice depends on whether you prioritize maximum efficacy or a smoother application experience.

The Ordinary Niacinamide 10% + Zinc 1%, Smoothing Serum for Blemish-Prone Skin

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