If you’re developing your own skincare line, one of the smartest places to start is with serums — high-performance products known for their active ingredient concentration and fast results. And when it comes to actives that customers trust, three names rise to the top: Niacinamide, Vitamin C, and Retinol.
These powerhouse ingredients are the cornerstone of modern skincare. In this guide, we break down their benefits, how they work, how to formulate them correctly — and how SKD Pharmaceuticals helps bring them to life as part of your private label serum range.
Serums are lightweight, fast-absorbing, and designed to deliver targeted results. They’re often used between cleansing and moisturising, allowing active ingredients to penetrate deeper and more effectively than thicker creams or oils.
From a brand perspective, serums are ideal because they:
At SKD Pharmaceuticals, we help you launch serums that are elegant, effective, and compliant — designed with clinical precision and manufactured in UK-based facilities.
What it is: A form of vitamin B3, suitable for nearly all skin types.
What it does:
Formulation tip:
Effective at concentrations between 2% and 10%. Higher strengths (e.g. 10%) are popular for oily or blemish-prone skin but must be pH-balanced (typically 5–6) to avoid irritation. Niacinamide works well alongside hyaluronic acid, peptides, and ceramides — making it ideal for multi-tasking formulas.
Our approach:
We stabilise niacinamide in light, non-comedogenic gel or emulsion bases — often paired with soothing agents for sensitive skin formulations.
What it is: A potent antioxidant that protects against environmental damage and supports collagen production.
What it does:
Formulation tip:
The most effective (but unstable) form is L-ascorbic acid. We typically stabilise it at 10–20% concentration, often with ferulic acid and vitamin E for enhanced performance.
Other stable derivatives, like ascorbyl glucoside or magnesium ascorbyl phosphate, offer gentler alternatives and extended shelf life — ideal for sensitive skin or water-based serum systems.
Our approach:
SKD serums use airless packaging, pH-buffering, and antioxidant pairing to keep vitamin C formulas potent and shelf-stable.
What it is: A vitamin A derivative known as the gold standard in anti-ageing skincare.
What it does:
Formulation tip:
Retinol is light- and air-sensitive, and requires encapsulation or stabilisation. Typical usage ranges from 0.1% to 1%, depending on tolerance and target market. pH must be adjusted appropriately (ideally ~5–6), and soothing agents like bisabolol, panthenol, or ceramides are often included to minimise irritation.
Our approach:
We formulate with stabilised or encapsulated retinol and offer alternatives like retinaldehyde or bakuchiol for vegan or sensitive skin-friendly variations.
While all three ingredients are powerful alone, combining them requires expertise:
At SKD, we guide you through these pairing decisions, helping you create single-hero or multi-functional serums with full ingredient synergy and compliance.
Niacinamide, Vitamin C, and Retinol aren’t just trending — they’re scientifically proven, highly sought after, and versatile enough to build a full serum range around.
With pharmacist-led formulation, regulatory expertise, and small-batch manufacturing options, SKD Pharmaceuticals makes it easy to develop a serum that’s as effective as it is marketable — whether you want clean beauty simplicity or cutting-edge cosmeceutical performance.
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