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Solar Lentigines: How to Identify and Remove Age Spots
Teresa de Miguel Miró
Precise definition, differential diagnosis, and the most effective professional treatments to show off radiant, spot-free skin.
What are solar lentigines? Solar lentigines, also known as age spots, are flat, well-defined hyperpigmented macules caused by chronic exposure to ultraviolet radiation. They are produced by a localized overproduction of melanin in the basal layer of the epidermis, without cellular atypia. They are benign, non-contagious, and appear preferably in areas of chronic sun exposure: the face, hands, décolletage, and forearms. If you also notice irregular spots or spots that have appeared more recently, you may also be interested in our complete guide on hyperpigmentation, causes, and treatments.
Have you noticed those small spots that appear on the skin and often remind us that time does not pass in vain? Solar lentigines are a reminder of years in the sun, but also an aesthetic concern for many people. The good news is that you are not alone in this battle, and there are highly effective professional treatments to achieve more even and radiant skin. We tell you everything you need to know.
What are solar lentigines and why do they appear?
Are solar lentigines the same as age spots?
Solar lentigines, also known as age spots, are those small brown spots that usually appear in sun-exposed areas like the face, hands, and arms. As we age, our skin becomes more prone to these spots due to accumulated sun exposure. They are not dangerous in themselves, but it is important to understand them well, both for aesthetic reasons and to distinguish them from other pigmented lesions that do require urgent medical attention.
| Characteristic | Solar lentigines | Melasma | Melanoma (initial stage) |
|---|---|---|---|
| Shape | Flat, rounded or oval, well-defined edges | Irregular patches, often symmetrical on both cheeks | Asymmetrical, irregular edges (ABCDE rule) |
| Color | Uniform brown, light to dark | Brown to brownish-gray, irregular distribution | Color variation within the same lesion (brown, black, red, white) |
| Size | Typically 2–20 mm | Large patches, often several centimeters | Generally >6 mm; growing lesion |
| Main trigger | Accumulated sun exposure | Hormonal factors + UV (pregnancy, contraceptives) | UV exposure + genetic predisposition |
| Evolution | Stable; they darken with more sun exposure | Fluctuates with hormonal and seasonal changes | Growing and changing lesion: urgent dermatological evaluation |
| Response to treatment | Responds well to laser, IPL, and chemical peels | Responds to depigmenting agents; prone to recurrence | Medical treatment, not a cosmetic condition |
Important: if a pigmented spot bleeds, itches, grows rapidly, or shows color variation or irregular edges, consult a dermatologist before any cosmetic treatment. Solar lentigines are benign, but any doubt justifies a prior professional evaluation.
How do they form?
The formation of solar lentigines is directly related to UV radiation. UVA and UVB rays stimulate the production of melanin, the substance that gives our skin its color. With accumulated exposure over the years, this production can become irregular, generating localized concentrations of melanin that manifest as flat brown spots. Unlike freckles (ephelides), which can disappear in winter, solar lentigines are permanent without treatment.
Factors influencing their appearance
Besides the sun, other factors contribute to the development of solar lentigines:
- Genetics: if your parents developed lentigines, your skin has a greater predisposition, since the reactivity of melanocytes to UV has a hereditary component.
- Fair phototype (Fitzpatrick I–III): less natural melanin means less protection against UV and greater melanocyte reactivity.
- Age: accumulated UV damage builds up for decades before manifesting visually; lentigines usually appear from age 40 onwards.
- Photosensitizing medications: certain antibiotics, retinoids, and oral contraceptives can increase skin sensitivity to UV radiation.
- Environmental factors: urban pollution combined with sun exposure accelerates photoaging and pigmentation irregularities.
Prevention: sun protection is your best treatment
Sun protection: your best ally
The first and most important step against solar lentigines is prevention. Use a broad-spectrum sunscreen with SPF 50+ every day, even in winter and on cloudy days. UVA radiation (primarily responsible for chronic melanocyte stimulation) passes through clouds, glass, and windows all year round. Reapply every two hours during outdoor exposure. This prevents the formation of new spots and keeps existing ones from darkening. If your skin already has spots or a predisposition to them, it is also advisable to choose a sunscreen formulated for skin with pigmentation, such as Mesoprotech Melan 130+ Pigment Control, and review this guide on which ingredients to look for in an anti-spot sunscreen.
Protective clothing: more than an accessory
In addition to sunscreen, covering the skin with long-sleeved shirts and a good hat is very effective, especially during the hours of greatest UV intensity, between 10 a.m. and 4 p.m. Fabrics with UPF (Ultraviolet Protection Factor) certification offer a quantified level of sun protection and are especially useful for fair skin or skin with a history of significant sun exposure.
Avoid tanning beds
If you are looking for a tan, opt for self-tanners or spray tans. Tanning beds emit high-intensity UVA radiation and are classified as a Group 1 carcinogen by the IARC (WHO). They significantly accelerate photoaging and increase the risk of developing solar lentigines and skin cancer. There is no safe dose of artificial tanning via UV radiation.
Professional treatments to remove solar lentigines
Topical creams (vitamin C, kojic acid, azelaic acid, niacinamide) can partially lighten solar lentigines with months of consistent use, but they rarely remove them completely. This is because topical actives act on the melanin already present in the epidermis but do not address the hyperactive melanocytes that cause the overproduction. Professional treatments attack the root cause:
Topical treatments: attacking with creams and serums
Ingredients such as glycolic acid, vitamin C, and hydroquinone are some of the most used to progressively lighten solar spots. Consistency is key: don't expect immediate results, but with patience, changes will come. It is advisable to consult a professional to obtain personalized recommendations according to your skin type, as not all actives are suitable for all phototypes.
In-clinic procedures: technology to the rescue
If the spots are persistent or long-standing, professional treatments offer much more effective and faster results than topical agents alone. You can see all the options in the Beldon Beauty depigmenting treatments collection, with prices starting at €130:
- MEDICAL CHEMICAL PEEL, which accelerates epidermal cell renewal, removing melanin-laden keratinocytes in the surface layers. Effective for superficial lentigines and for the global treatment of photoaging. If you want to delve into the available variants, here are the types of facial chemical peels by depth.
- IPL LASER - Intense Pulsed Light, which emits a spectrum of light selectively absorbed by melanin in superficial pigmented lesions. Very effective for treating multiple lentigines distributed over a large area (full face, hands, décolletage) in a single session.
| Treatment | Mechanism | Sessions needed | Recovery time | Ideal for |
|---|---|---|---|---|
| Medical chemical peel | Controlled chemical exfoliation that removes the melanin-laden surface epidermal layers | 2–4 sessions at 3–4 week intervals | 3–7 days of visible peeling | Superficial lentigines; global photoaging; skin with multiple spots |
| IPL (Intense Pulsed Light) | Selective photothermolysis: light is absorbed by melanin granules, which are fragmented and removed by the lymphatic system | 1–3 sessions depending on the depth and number of spots | 7–14 days of a "coffee ground" effect that flakes off on its own | Multiple lentigines distributed over a large area; diffuse photoaging; face, hands, and décolletage |
| Cryotherapy | Localized freezing of the lentigo with liquid nitrogen, which destroys hyperactive melanocytes via thermal shock | 1–2 sessions | 5–10 days of crusting and localized redness | Isolated, well-defined individual lentigines on fair skin |
Natural remedies: the classics never die
Some opt for natural remedies like lemon juice or apple cider vinegar. Results vary considerably, and there is a risk of irritation, especially on sensitive skin. If you decide to try them, do so with caution and always consult a professional before applying anything to your skin. Natural remedies can be a complementary option, but they should not replace professional treatments when spots are a persistent problem.
Consult a dermatologist: your best advice
Why is professional evaluation important?
There is nothing like an expert's opinion. A dermatologist can assess your skin, correctly diagnose pigmented spots, and recommend the most suitable treatment for your phototype and the specific characteristics of the lentigines. Professional attention is especially important if you have specific concerns about your skin or if you have noticed changes that worry you.
When should you go to the dermatologist?
If you notice that a spot changes color, size, or shape, or if a lesion itches, bleeds, or develops irregular edges, consult a dermatologist as a priority. Apply the ABCDE rule: Asymmetry, irregular Borders, heterogeneous Color, Diameter >6 mm, Evolution. Regular check-ups are also recommended if you have a family history of skin problems or a history of significant sun exposure.
Your ally in skincare
Do not hesitate to ask questions and discuss all your concerns. A good professional becomes your best ally in the long-term management of solar lentigines, from accurate diagnosis to a personalized treatment plan and prevention strategies.
Combating solar lentigines is a journey that requires patience and consistency. From daily sun protection to the most advanced professional treatments, there are multiple effective paths to achieving more even and radiant skin. Remember that your skin is unique: what works for one person may not be the ideal solution for another. Always consult a professional for the most personalized advice. If you are ready to take the step toward brighter skin, request your free preliminary diagnosis at Beldon Beauty: our team will assess your solar lentigines and recommend the most suitable treatment.
Frequently asked questions
Why don't creams completely remove solar lentigines?
Topical depigmenting actives (vitamin C, kojic acid, niacinamide, low-concentration hydroquinone) act by inhibiting tyrosinase (the enzyme responsible for melanin synthesis) or as antioxidants that reduce melanin oxidation. They can lighten existing pigmentation and slow down the formation of new spots, but they do not eliminate the hyperactive melanocytes that are the root cause of the lentigo. This is why creams rarely result in the complete removal of established lentigines, and professional treatments that act directly on the melanin (laser, IPL) are necessary for complete resolution.
Will solar lentigines return after IPL or peel treatment?
The treated lentigo is effectively destroyed and will not reappear in the same spot. However, new lentigines can develop in other areas of the skin with continued sun exposure without proper protection. SPF 50+ applied daily—not just on sunny days, as UVA radiation passes through clouds and glass year-round—is the only prevention with scientific evidence to avoid the formation of new lentigines after treatment.
How much does it cost to treat solar lentigines in Madrid?
The price depends on the treatment and the number of spots to be treated. In the Beldon Beauty depigmenting treatments collection, prices range from €130 (Dermacure) to €600 (Cosmelan), with IPL treatments starting from €320 per session, with discounts for session packs. The Beldon team can recommend the most suitable option after assessing your skin during the free diagnosis.
What SPF do I need if I already have solar lentigines?
A broad-spectrum photoprotector with SPF 50+ is recommended, reapplied every two hours during outdoor exposure. For skin with spots or a predisposition to pigmentation, it is also advisable that the formula includes depigmenting actives, as is the case with Mesoprotech Melan 130+ Pigment Control.
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