Capillaries on the face expand due to genetic factors, sun exposure, rosacea, temperature fluctuations, skin sensitivity, and age-related changes. While this is most commonly a cosmetic phenomenon, visible blood vessels can also be a sign of other health conditions. In such cases, the exact causes are diagnosed during consultation with dermatologists .
What are capillaries and why are they visible on the face?
Capillaries are the smallest blood vessels in the human body, connecting arteries to veins. Their diameter is only 5–10 micrometres (µm). When the walls of these vessels weaken or dilate, they become visible through the skin — in medicine, this is referred to as telangiectasia.
The face is a particularly vulnerable area, as the skin here is very thin and capillaries are positioned close to the surface. Visible capillaries most commonly appear on the cheeks, sides of the nose, and chin.
Main causes of capillary expansion on the face
Scientific data indicates that several interrelated factors contribute to capillary dilation. According to a StatPearls (2024) review, the majority of adults encounter some form of telangiectasia during their lifetime, with the typical age of onset being 30–50 years.
Genetics. Heredity is one of the risk factors for facial telangiectasia. According to a genome-wide study by Mekić et al. (JEADV, 2021), pigmentation genes (MC1R, SLC45A2) are associated with facial capillary dilation, though this association cannot be separated from the influence of skin tone. In families where parents or grandparents had visible facial capillaries, the likelihood of inheriting them is greater. This phenomenon is particularly common among fair-skinned individuals.
Sun exposure. UV rays break down collagen and elastin fibres in the dermis. Prolonged sun exposure weakens vessel walls, causing capillaries to dilate and become visible through the skin. According to DermNet NZ data, this is one of the most common causes of telangiectasia.
Rosacea. A chronic inflammatory skin condition that causes facial redness, capillary dilation, and sometimes acne-like breakouts. This is one of the main causes of visible facial capillaries identified in dermatological practice.
Temperature fluctuations. A sudden transition from cold to heat (or vice versa) leads to rapid expansion and contraction of blood vessels. Over time, this damages capillary walls. Sauna, steam room, or very hot water treatments contribute to capillary dilation.
Alcohol. Alcohol dilates blood vessels and increases blood flow to the facial skin. With regular alcohol consumption, capillaries may remain dilated for extended periods.
Hormonal changes. During pregnancy, menopause, or when using contraceptives, fluctuating hormone levels affect vascular tone. Hormonal fluctuations, such as those involving estrogen, can influence vascular tone and contribute to capillary dilation.
Skin sensitivity. Thin, reactive skin — most commonly of a lighter phototype — is more prone to visible capillaries due to a weaker protective barrier.
Age. With age, the skin loses collagen and elastin, and vessel walls weaken. According to the review by Sandean et al. (StatPearls, 2024), the typical age of telangiectasia onset is 30–50 years.
Is it possible to prevent capillary dilation?
Stopping capillary dilation entirely — particularly where there is a genetic predisposition — is difficult, though certain factors may slow the process:
- Consistent use of sun protection (SPF 30+).
- Avoiding sudden temperature changes.
- Limiting alcohol consumption.
- Using gentle, alcohol-free and soap-free facial cleansers.
- Avoiding hot water, saunas, and steam rooms when early signs of capillary dilation are present.
How are dilated facial capillaries treated?
Dilated capillaries do not resolve on their own. Laser therapy and IPL (intense pulsed light) methods are used for capillary removal. The laser precisely heats the affected vessel, causing it to contract and gradually dissolve. The number of sessions depends on the extent of capillary dilation and individual characteristics.
Facial capillary care at home
While cosmetic products do not eliminate dilated capillaries, they are used to reduce redness and protect the skin. Products used for this purpose include:
- A cream with SPF protection (used daily, regardless of season or cloud cover).
- Gentle facial cleansers free of alcohol, soap, and aggressive surfactants.
- Cool water for washing.
- Cold compresses, which temporarily reduce redness through their vasoconstrictive effect.
When to see a dermatologist
A medical assessment is carried out when capillaries are spreading rapidly, appearing without a clear cause, bleeding, or when these signs are accompanied by persistent facial redness and a burning sensation. These symptoms may be associated with rosacea or other conditions requiring professional diagnosis by a dermatovenereologist.
