Your oily skin isn't
the problem.
Your routine is.
A chemist's step-by-step guide to balancing sebum, preventing breakouts, and actually enjoying your skin. Morning and night.
Let's settle this once and for all: oily skin is not a character flaw. It's sebum overproduction - and sebum overproduction has very specific, addressable causes.
Hormonal fluctuations, a compromised skin barrier from over-stripping actives, environmental aggressors... All of these can tip your skin into overdrive. The reflex is to fight back hard: acids, astringents, mattifying everything. But over-treating oily skin is one of the fastest ways to make it worse. Strip the barrier, and your skin produces more sebum to compensate. A balanced routine isn't a compromise - it's the strategy.
Morning Routine Start balanced,
stay matte.
Your AM routine has one goal: protect and regulate without aggravating. Here's how to build it.
Gentle Cleanser (optional)
Begin with a mild, non-stripping cleanser to remove bacteria and overnight impurities. In the morning, skip the salicylic acid - your skin doesn't need the additional exfoliation at this stage, and over-exfoliating is exactly what triggers rebound oil production.
Look for: pH 5.5 formula, no alcoholAntioxidant Serum: Vitamin C
This step is often skipped for oily skin types and it shouldn't be. Vitamin C is one of your best allies: it inhibits sebum oxidation (the process that turns oil into the congestion you actually see), brightens hyperpigmentation, and supports your skin's natural defense against UV-induced damage.
Look for: L-ascorbic acid 10–15%, or a stabilised derivativeMattifying Moisturizer
Yes, oily skin needs moisture. Skipping moisturizer signals your skin to compensate - more oil. Choose a lightweight, non-comedogenic formula that controls shine throughout the day without sitting heavy on the skin. The goal is hydration and regulation, not one or the other.
Look for: bio-marine mattifying actives, pumpkin seed extract, niacinamideSPF - Non-Negotiable
Post-inflammatory hyperpigmentation is one of the most stubborn oily/acne-prone skin concerns - and UV exposure is its primary trigger. Skipping SPF turns every breakout into a potential dark spot. Always the last step of your AM routine, always.
Look for: SPF 50+, non-comedogenic, matte finish"Strip the barrier and your skin produces more sebum to compensate. A balanced routine isn't a compromise - it's the strategy."
— Justine Plichon, Cosmetic Chemist
Evening Routine Repair, regulate,
reset.
Nighttime is when your skin repairs itself - and when the most targeted actives do their best work. This is where oily skin really gets to benefit from chemistry.
Oil-Based Cleanser - First Pre-Cleanse
Start with an oil cleanser to dissolve makeup, SPF, and the day's sebum buildup. Counterintuitive for oily skin? Only if you don't understand the chemistry: oil dissolves oil. A lipophilic formula traps particles that a water-based cleanser simply cannot reach.
Look for: plant-derived oils, non-comedogenic esters, no fragranceWater-Based Cleanser — Second Cleanse
Follow with a water-based cleanser to remove the remaining residue from the oil cleanse and address the skin's aqueous environment. This is the moment to introduce actives: look for salicylic acid or zinc. Both penetrate the pore, reduce congestion, and keep acne, whiteheads and blackheads in check with consistent use.
Look for: BHA (salicylic acid 0.5–2%), zinc PCATreatment Serum - Choose Your Weapon
Two routes here, depending on your primary concern. Niacinamide (Vitamin B3) is your go-to for dark spot reduction, pore minimisation, and evening skin tone - and it plays beautifully with most other actives. Retinol, on the other hand, is the gold standard for sebum regulation and cellular turnover. It exfoliates at the deepest level, trains your skin over time, and visibly refines texture.
Note: never use retinol and actives acids on the same nightRich Moisturizer - Always After Retinol
On retinol nights, sealing with a rich, barrier-supportive moisturizer isn't optional - it's the protocol. Retinol accelerates cellular turnover, which can temporarily compromise the skin's tolerance. A deeply hydrating cream buffers that response and keeps the barrier intact for long-term use.
Look for: ceramides, squalane, panthenol, hyaluronic acid
The Science Brief Four ingredients
worth knowing.
Every step in this routine is backed by actives with real clinical evidence. Here's the short version.
Vitamin C
Antioxidant that neutralises free radicals, inhibits melanin synthesis, and - critically for oily skin - prevents sebum oxidation that leads to congestion.
Salicylic Acid
A beta-hydroxy acid (BHA) that is oil-soluble, meaning it can penetrate inside the pore to dissolve debris, reduce inflammation, and prevent breakouts at the source.
Niacinamide
Vitamin B3. Regulates sebum production, reduces dark spots, minimises pore appearance, and is one of the most tolerated actives across all skin types.
Retinol
The gold-standard Vitamin A derivative for cellular turnover, sebum regulation, and long-term skin refinement. Introduce slowly; always follow with moisture.
"The best routine for oily skin isn't the most aggressive one. It's the one consistent enough to let your skin find its own balance — with a little scientific support."