Melasma is a dermatological condition that results in the formation of appearance of dark spots on the skinespecially in sun-exposed areas such as the face. Although it is not a serious medical condition, it can have a significant impact on the self-esteem and quality of life of those who suffer from it. Understanding what melasma is, what causes it and what treatment options are available is critical to managing and reducing its effects.
This post aims to provide clear and accessible information about melasma to help those seeking to better understand this condition and find effective ways to treat it.
Melasma and chloasma: differences and similarities
Melasma and chloasma are terms that are often used interchangeably, but have nuances that can differentiate them in certain contexts.
Both refer to the hyperpigmentation of the skincharacterised by brown or grey patches, commonly on the face. However, here are some key differences and similarities:
What exactly is melasma
Melasma is a skin condition that causes dark spots to appear, mainly on sun-exposed areas such as the face, neck and arms. It is more common in women than in menAlthough it can affect anyone, it is more common in people with darker skin tones.
Definition of chloasma
The term "chloasma" is used specifically to refer to the melasma appearing during pregnancy. Due to hormonal changes, many pregnant women develop these spots, which is why chloasma is also commonly known as "the mask of pregnancy".
Key differences between the two
- Context of appearanceMelasma can appear in anyone, at any time, while chloasma refers exclusively to melasma that arises during pregnancy.
- "Melasma" is the general term used in medical and dermatological contexts, while "chloasma" is used more in the context of maternity.
Similarities
- Appearanceboth appear as dark brown or greyish patches on the skin, with irregular edges.
- Triggering factorssun exposure and hormonal changes are common factors in both conditions.
- TreatmentTreatment options are similar and include depigmentation creams, sunscreens and dermatological procedures.
Causes of melasma
Melasma is a complex and multifactorial condition, which means that several factors can contribute to its development:
Sun exposure
- Ultraviolet (UV) radiation from the sun is one of the main triggers of melasma. Exposure to the sun stimulates melanocytes, the cells responsible for the production of melanin. melanin productionThe skin's pigment is then increased, resulting in dark patches on the skin.
- Even brief exposure to the sun can worsen existing spots and contribute to the appearance of new ones.
Hormones
- The hormonal changes are a significant factor in the development of melasma. This condition is particularly common in pregnant women, due to hormonal fluctuations, the aforementioned "chloasma".
- Hormones such as oestrogen and progesterone can stimulate melanocytes to produce more melanin.
- Women taking oral contraceptives or hormonal therapy are also at an increased risk of developing melasma due to the hormonal changes these treatments cause.
Genetic factors
- Genetic predisposition plays an important role in melasma. People with family history of melasma are more likely to develop it.
- This condition is more common in individuals with darker skin (phototypes III and IV), such as those of Latin, Asian, Mediterranean or Middle Eastern descent.
Other factors
- Some cosmetic products can cause irritation and sensitise the skin, which can lead to the development of melasma.
- Certain medications, such as those containing hormones, can trigger or worsen melasma.
- Stress can affect the body's hormonal balance, which in turn can influence the appearance of melasma.
Skin care tips to prevent and treat melasma
Melasma can be managed and, in many cases, prevented with a proper skin care routine. Here are some practical tips to help prevent and treat this condition:
Consistent use of sunscreen
- Use broad-spectrum sunscreen with a FPS of at least 30 every day, even when it is cloudy or if you are indoors near windows.
- Apply sunscreen every two hours and after swimming or sweating.
- Test products with zinc oxide or titanium dioxideThese physical ingredients are effective in protecting the skin without causing irritation.
Establishing a good skin care routine
- Use mild cleansers that do not irritate the skin. Avoid products containing alcohol or strong fragrances.
- Keep skin well hydrated with moisturising creams containing soothing ingredients such as hyaluronic acid, glycerine or aloe vera.
- Use products with active ingredients such as hydroquinone, kojic acid, azelaic acid, niacinamide or vitamin C. These can help reduce pigmentation and even out skin tone.
Avoiding triggers
- Avoid using cosmetic products that can irritate the skin, such as harsh exfoliants and abrasive treatments.
- Avoid extreme heat and environments that can raise the temperature of your skin, such as saunas and hot bathsas heat can make melasma worse.
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