Moisturizing face serum in summer – why is it worth using it under SPF?

In the summer, our skin goes through a real test. High temperatures, UV radiation, air conditioning and spending a lot of time outdoors cause it to lose more water and dry out faster. Although it might seem that in a hot climate, less is more, this moisturizing face serum is an absolute must-have in summer care. Especially under a cream with SPF.

Why does the skin need more hydration in summer?

The skin is the largest organ of our body – in an adult it can cover an area of ​​up to 2 m² and constitute about 16% of the body weight . In the summer, its barrier functions are particularly burdened – it acts as a shield, protecting the body from dehydration, excess heat and environmental factors.

High temperatures and UV radiation intensify the TEWL phenomenon – transepidermal water loss. Studies show that TEWL in the summer can increase by as much as 30–40% , which means a significant weakening of the hydration of the epidermis.

In addition, high sun exposure weakens the skin's hydrolipid layer , which is responsible for retaining moisture and protecting against microorganisms. Its disruption can result in:

• dryness,
• flaking,
• blush,
• as well as the intensification of inflammatory reactions.

In summer climates, even oily skin can show signs of dehydration – a feeling of tightness, dullness and susceptibility to irritation. That is why light but strongly moisturizing care is not only recommended, but absolutely necessary.

A well-chosen moisturizing facial serum, rich in humectants and soothing ingredients, can really improve skin comfort, prevent excessive drying and support its regeneration after exposure to the sun.

Is it necessary to use a moisturizing facial serum under SPF?

Yes! Sunscreen protects against harmful UVA and UVB radiation, but often does not contain enough moisturizing substances. A moisturizing facial serum acts as a base : it prepares the skin for contact with the filter, improves its comfort of wearing and strengthens the protective barrier.

The ideal moisturizing facial serum under SPF should:

• be light and quickly absorbed,
• do not roll under filters,
• contain strong humectants (e.g. hyaluronic acid, trehalose).

I can recommend such a serum in the Orientana store. Discover the serum ampoule - it has a light gel consistency, does not roll under the filter, contains moisturizing humectants. What's more, the SPF cream does not roll on this serum.

Trehalose – a summer rescue for dehydrated skin

Trehalose is a natural sugar presentTrehalose is a natural disaccharide found in desert plants such as the Rose of Jericho , where it plays a protective role in extreme drought conditions. Thanks to its unique properties, it has also gained recognition in cosmetology.

In skin care products, trehalose:

• intensively binds water in the epidermis, creating a protective film that prevents its evaporation,
• stabilizes cell membranes , protecting them from damage caused by heat, UV radiation and environmental factors,
• protects skin proteins and lipids against oxidative degradation,
• It has high chemical and physical resistance, which makes it an ideal ingredient for use on hot days .

According to research, trehalose can reduce UVB-induced damage to cell membranes and proteins by up to 40%. Additionally, it can support the skin's defense mechanisms, reducing inflammation and improving its elasticity and regenerative capacity.

What will you find in the Ashwagandha + Trehalose + Hyaluronic Acid Ampoule Serum?

This moisturizing face serum combines the power of modern biotechnology with traditional plant care. Its formula was composed for comprehensive hydration, protection and regeneration of the skin in summer conditions.

• Ashwagandha (Withania somnifera) – an adaptogen with strong antioxidant properties. It helps the skin adapt to oxidative and environmental stress, soothes irritations, and strengthens the epidermal barrier.
• Olive Squalane – a light, non-greasy emollient that mimics the skin’s natural lipids. Smooths, softens and protects against water loss without clogging pores.
• Sodium Hyaluronate & Hyaluronic Acid – two forms of hyaluronic acid with different molecular sizes. Hyaluronic acid (High Molecular Weight) acts on the surface, creating a protective film, while Sodium Hyaluronate (Low Molecular Weight) penetrates deeper into the epidermis, binding water inside the skin. Their synergistic action provides intensive and multi-level hydration.
• Lactobionic Acid – a delicate PHA acid, ideal for sensitive skin. It has a keratolytic (exfoliating) effect, but without irritation. It also binds water and has an antioxidant effect.
• Algin – a polysaccharide from brown algae, creates a protective film on the skin, has a soothing effect and enhances the moisturizing effect.
• Glycerin – a classic humectant that binds moisture from the environment and retains it in the epidermis, increasing its hydration and elasticity.

This carefully selected combination of active ingredients makes the serum perfect for day use – also under makeup and SPF – and for night use, as a soothing, regenerating care.

In summer, care should be light, effective and adapted to the rhythm of the day. A moisturizing face serum plays a key role here, providing a care base for further steps.

In the morning: after cleansing and toning the skin, apply a few drops of serum and gently massage in. Once it has absorbed, apply a cream with SPF. Importantly, the formula of Orientana serum has been developed so that it does not roll under creams with a filter , even mineral ones, and works well with makeup. This will avoid the layered effect and the unpleasant feeling of stickiness.

In the evening: use the moisturizing face serum as a regenerating treatment after a day full of exposure to external factors. The ingredients contained support the reconstruction of the skin barrier, soothe and provide intensive hydration.

For whom? The product is suitable for all skin types – dry, oily, combination, sensitive or vascular. It is especially recommended for dehydrated, stressed skin that requires quick regeneration in the summer.

Who is this moisturizing facial serum for?

This serum will be an ideal choice for several types of users:

• For those using UV filter creams who are looking for a light, well-cooperating base product. The serum does not roll under SPF, does not burden the skin and improves the comfort of wearing filters, especially on hot days.
• For dehydrated and stressed skin – especially in summer, when our skin is exposed to frequent temperature changes, air conditioning and UV radiation. Moisturizing face serum helps restore balance and supports regenerative processes.
• For those who value effectiveness without compromise – the serum formula combines a light consistency with a high content of active ingredients, providing noticeable effects without a sticky or greasy feeling.
• For all skin types – including sensitive, vascular and combination skin. Thanks to its well-balanced composition, the serum will work well both in everyday minimalist care and as an element of a more advanced care routine.

In the summer, it is not worth giving up on care, on the contrary - it must be adapted accordingly. A moisturizing face serum , such as Orientana Ashwagandha + Trehalose, is a key element of daily care, especially under a cream with a filter. It acts as a protective shield and provides the skin with everything it needs to survive the summer in good shape.

Moisturize your skin in the summer before signs of dryness appear. Your skin will reward you with glow!