Why Your Skin and Lips Look Dry in the Morning (and How to Fix It) ?

Even during sleep, the skin never stops working. It regenerates, eliminates dead cells and repairs the damage accumulated during the day. However, it also experiences a constant loss of water. This phenomenon, known as transepidermal water loss, is responsible for dull, dry skin that may feel tight in the morning, as well as lips that can appear dry and uncomfortable.

Over time, this nighttime dehydration contributes to the appearance of fine lines, dryness and a less radiant complexion. Understanding transepidermal water loss and knowing how to prevent it is therefore essential to preserving the beauty, health and comfort of the skin.

What is transepidermal water loss?

Transepidermal water loss (TEWL) refers to the natural and continuous evaporation of water from the skin through the skin barrier, even without visible perspiration. Unlike sweating or water loss caused by heat, TEWL is invisible but constant, affecting the skin’s ability to remain supple and comfortable.

How does it occur?

Water naturally rises from the deeper layers of the skin. It passes through the skin barrier and evaporates into the surrounding air.

If the skin barrier is damaged (cold and dry air, temperature fluctuations, dry skin, overly aggressive cleansing routines, etc.), water escapes more quickly and uncontrollably.

It is also linked to the skin’s natural respiration process, a form of gaseous exchange between the skin and the environment, which also contributes to the gradual reduction of skin moisture.

Why does it increase at night?

Several factors explain why transepidermal water loss increases during the night. Dry air, caused by heating or air conditioning, promotes water evaporation. During sleep, cellular regeneration also mobilizes a significant amount of water to repair the skin and eliminate toxins. Finally, when the skin barrier is weakened and the protective lipid film is altered, water escapes more easily, increasing dehydration.

Signs of nighttime dehydration

It is easy to recognize when your skin and lips are affected by transepidermal water loss:

• Dull complexion and tired-looking features in the morning
• Skin that has lost its plump appearance
• Redness or sensations of tightness
• Slight flaking or skin that feels less supple
• Chapped or dry lips, even after moisturizing
• More visible fine lines around the eyes and mouth

Recognizing these signs early helps prevent chronic dehydration and preserve the skin’s radiance and youthful appearance.

Night care: the key to compensating for transepidermal water loss

To limit nighttime dehydration, it is essential to use targeted night care products for both the face and lips. These treatments help to:

• Strengthen the skin barrier
• Retain water within the deeper layers of the skin and restore moisture balance
• Nourish and repair sensitive areas such as the lips and eye contour
• Reduce visible signs of fatigue

PURE Complete Youth Night Concentrate

PURE Complete Youth Night Concentrate acts where the skin needs it most during the night. Its formula combines:

• Hyaluronic acid: attracts and retains water in the epidermis for intense hydration
• Kronoxyl-9 neuromodulating peptides: relax facial features and help reduce and prevent expression lines
• Tasmanian pepper: soothes the skin and leaves the complexion radiant and revitalized

Used regularly, PURE Complete Youth Night Concentrate helps prevent dryness, reduce signs of fatigue, smooth facial features and reveal a luminous complexion, even after a short night or in an overheated bedroom. Skin appears refreshed and revitalized upon waking.

PURE Lip Sleeping Mask: hydrates, plumps, smooths and protects

Lips are particularly vulnerable to water loss because the epidermis is extremely thin in this area of the face and contains no sebaceous glands. The PURE Lip Sleeping Mask combines:

• Encapsulated hyaluronic acid: deeply and durably hydrates
• Biomimetic peptide: volumizing, anti-aging and hydrating
• Mango and shea butters: nourish and protect
• Plant-derived copolymer: anti-pollution, anti-inflammatory and hydrating
• 100% plant-derived raspberry aroma: transforms the treatment into a pleasant sensory experience

Result: plumper, softer and more comfortable lips in the morning, protected against transepidermal water loss.

Pro tips to preserve overnight hydration

Even the best products cannot compensate for certain habits. Overly aggressive cleansing can weaken the skin barrier and increase moisture loss. After showering, it is essential to apply a moisturizing product quickly, as the skin loses water rapidly when exposed to air.

Avoid formulas that are too heavy or greasy, as they may interfere with the absorption of key ingredients. Finally, don’t forget the lips: often neglected in nighttime routines, they dehydrate even more easily than the face and deserve special attention.

Complete nighttime ritual

Here is a simple ritual for hydrated skin and lips, refreshed features and a radiant complexion in the morning.

1
Cleanse & prepare
Gently cleanse the face with the appropriate Laboratoire Dr Renaud cleanser, then apply HydraCalm Toner or CellPerfect Essence
2
Apply the night cream
Apply PURE Complete Youth Night Concentrate to the face and neck
3
Don’t forget your lips
Apply PURE Lip Sleeping Mask
4
Prepare your bedroom
Sleep in a room with a comfortable temperature and, if possible, slightly humidified air

This simple ritual helps prevent dryness, refresh tired-looking skin, reduce the appearance of fine lines and reveal a radiant complexion in the morning, while transforming your skincare routine into a true sensory experience.