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Vitality Cleansing Fluid
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Summer Skincare for Oily Skin: A 4-Step Routine
Oily skin in summer is often blamed on heat or humidity, but there is another factor that is easy to underestimate - ultraviolet light. Here is why skin looks shinier in the warm months and how to build a simple, effective four-step routine.
Skincare Routines
If your skin turns shiny before noon in the summer, you are not alone. In the warm months many people notice more shine, pores that look larger and more frequent blemishes. The usual explanation is "the heat", but the real picture is more interesting: research points to ultraviolet (UV) radiation as one of the most likely drivers of increased oiliness.
The good news is that you do not need a harsh or complicated routine. A simple four-step sequence is enough: gentle cleansing, sebum-balancing ingredients, lightweight hydration and daily sun protection. Below we explain why skin looks oilier in summer and how to build a routine that manages shine from the first step to the last.
Why Skin Looks Oilier in Summer
UV radiation can set off a chain reaction at the skin's surface. When skin is exposed to UV light, it can generate reactive oxygen species (ROS) - unstable molecules associated with oxidative stress. This can affect skin cells and surface lipids, including the lipids in sebum. In simple terms: UV exposure changes the environment on the skin's surface.
Sebum is not just "oil". It also contains antioxidant components, including vitamin E and coenzyme Q10, that help the skin defend itself against oxidative stress. Because UV exposure increases oxidative stress, researchers suggest that higher sebum levels may be part of the skin's response to increased UV exposure. On the skin, this shows up as more visible shine, especially in areas already prone to oiliness.
UV radiation can also change the composition of sebum by oxidizing certain lipids. For blemish-prone skin, these changes may contribute to visible congestion, pores that look larger and the appearance of blemishes. This is exactly why daily sun protection matters: it reduces exposure to a factor that can make skin look oilier or more congested.
How to Build an Oily-Skin Routine
An effective routine for oily skin starts with a gentle cleanser and ends with a broad-spectrum SPF. Here are the four steps and the ONE Cosmetix products that fit each one.
Product routine
Step 1CleanseCleanses and refreshes without drying
Step 2TreatNiacinamide: sebum balance, less shine
Step 3MoisturizeLight cream-gel, hydrates without oily shine
Step 4ProtectDay cream with broad-spectrum SPF 50
Step 1: Gentle Cleansing
Sweat is part of summer skin. When it sits on the surface, it mixes with dust, sebum and dead cells. This buildup can clog pores or contribute to blemishes. Gentle cleansing helps remove the impurities that lead to clogged pores and blemishes.
When skin feels oilier, it is tempting to reach for a stronger product. But stronger is not always better. Harsh cleansers can strip beneficial natural lipids and disrupt the skin barrier, which increases the risk of irritation and breakouts instead of helping skin feel balanced.
- Vitality Cleansing Fluid: a gentle cleansing fluid from the professional Collagena range that removes sebum, sweat and impurities without drying the skin. Suitable for daily morning and evening cleansing.
- Collagena Pure Micellar Water: a quick option for removing makeup and impurities without rinsing - handy for a morning refresh.
Two to three times a week, add gentle exfoliation to unclog pores and reduce visible congestion. Glow Hunter Exfoliant (Collagena Professional) is a professional exfoliating gel with biodegradable particles that smooths and refreshes the skin without irritation.
Browse all facial cleansing products.
Step 2: Sebum-Balancing Ingredients
Adding niacinamide to a summer routine helps target excess sebum and reduce visible shine in the warm months. As a multi-functional ingredient, niacinamide also supports the skin barrier and helps skin feel balanced without stripping it.
- Niacinamide Intensive Serum (Collagena Professional): an intensive niacinamide serum from the professional range for skin prone to visible oiliness and blemishes. It balances sebum, reduces shine and improves the look of pores. Apply a few drops after cleansing and before your moisturizer.
See more face serums or read about sebum-control technologies.
Step 3: Lightweight Hydration and Balance
Hydration still matters for skin that looks oily. Natural sebum can help protect the skin, but it is not a reliable indicator of hydration. Skin prone to visible oiliness or blemishes can still be dehydrated and may benefit from lightweight hydration to help maintain balance.
Oily skin is best suited to lightweight moisturizers that hydrate without feeling heavy or sticky.
- Pink Supreme Cream-Gel Moisturizer (Collagena Professional): a lightweight cream-gel from Collagena Professional that provides hydration without an oily sheen. Its fast-absorbing texture makes it suitable for oily and combination skin, especially in the warm months.
Step 4: Sun Protection in an Oily-Skin Routine
Make broad-spectrum SPF the final step in your daytime routine. By helping reduce damage from UV radiation, sunscreen can support the skin against oxidative stress and limit factors linked to excess oil.
- Blue City Day Cream SPF 50 (Collagena Professional): a day cream with broad-spectrum SPF 50 protection from Collagena Professional. A light, fast-absorbing texture suitable for daily use under makeup - it finishes the routine without weighing skin down.
Browse all sun protection products, the full home care catalog or the professional Collagena Professional.
How to Manage Oily Skin: A Recap
- Start with gentle cleansing that removes sebum, sweat and impurities. Avoid harsh products that strip and irritate the skin.
- Follow with targeted ingredients like niacinamide that address excess sebum and surface shine.
- Oily skin still needs moisture. Use a lightweight moisturizer to maintain hydration and support the skin barrier.
- Finish your morning routine with broad-spectrum SPF to protect the skin and limit factors linked to excess oil.
Oily or Dehydrated: The Distinction That Matters
The two go together far more often than it looks. Skin short of water compensates with more oil. The result is a face that shines and feels tight after washing at the same time, which is confusing and usually leads to even harsher cleansing.
How to check
Oily skin has visible pores and shines again an hour or two after washing. Dehydrated skin feels tight, and fine lines read more clearly even while the face looks shiny. If you recognise both, your skin is oily and dehydrated, and the answer is more water, not less.
Cutting Shine Without Stripping
Blotting papers are handy during the day and do no harm, as long as you press rather than rub. Alcohol toners, though, give a brief dry feeling after which the oil returns with more force. If a product stings, that is not a sign that it is working.
Clay masks: how often
Once a week is plenty, and in summer, when skin is already dealing with sun and air conditioning, once a fortnight is fine. Do not let a mask dry to the point of cracking: that dehydrates and irritates. Rinse it off while it is still slightly damp.
Sunscreen That Does Not Feel Heavy
The most common reason oily skin skips sunscreen is how heavy it feels. Fluid and gel textures solve that without lowering the protection. Skipping is not an option: sun damage makes post-blemish marks darker and longer-lasting. There are options in our sun protection collection.
You do not need a harsh or complicated routine to manage oily skin this summer. Focus on gentle cleansing, targeted care, consistent hydration and daily sun protection to control shine and keep a healthy skin barrier all season.
This content is for educational purposes and does not replace professional advice. For persistent or severe skin concerns, consult a dermatologist.
01Why does my skin get oilier in summer?
Heat and humidity play a role, but research points to ultraviolet radiation as one of the most likely drivers. UV exposure increases oxidative stress at the skin's surface, and higher sebum levels may be part of the skin's protective response. The result is more visible shine, especially in the T-zone.
02How do I control oily skin without stripping it?
Choose gentle cleansing over harsh products, add a sebum-balancing ingredient like niacinamide, use a lightweight moisturizer and never skip sunscreen. Aggressive drying often makes things worse because it disrupts the skin barrier and can trigger more sebum.
03Can oily skin still be dehydrated?
Yes. Surface oil is not a reliable indicator of hydration. Skin prone to visible oiliness can still be dehydrated and may need lightweight hydration to maintain balance. Skipping moisturizer often makes skin look even shinier.
04What ingredients help balance sebum?
Niacinamide is among the most versatile: it helps balance excess sebum and reduce visible shine while supporting the skin barrier. Lightweight hydrating ingredients like hyaluronic acid maintain moisture without heaviness.
05Do I need sunscreen with oily skin?
Yes, and daily. Broad-spectrum SPF reduces UV exposure - a factor that can make skin look oilier and more congested. Choose a light, fast-absorbing formula so it does not feel heavy or sticky.
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