Ask a dermatologist for one product that prevents tan, dark spots, melasma flares and early lines, and the answer will almost always be the same: sunscreen, used properly, every day. It is also the step most people get wrong, by choosing the wrong kind, using too little or saving it for sunny days.
This guide explains what the labels mean, what brown skin in particular needs, and how to make sunscreen a habit in Rajkot’s sun, whether it’s a 42°C May afternoon or a grey day in the monsoon.
What sunlight does to the skin
Sunlight reaches the skin as several kinds of light, and each does something different:
- UVB is stopped in the outer skin. It causes sunburn and tanning and is the main cause of skin cancer. SPF measures protection against UVB.
- UVA goes deeper, into the dermis, and passes through clouds and window glass. It drives tanning, pigmentation and ageing: loss of collagen, fine lines and uneven tone. The PA rating or the words “broad spectrum” tell you about UVA protection.
- Visible light, the light we see, can also darken pigment, and the effect lasts longer in brown skin. It matters most if you have melasma or stubborn dark patches.
Brown skin has more natural protection against burning, so many people in India assume they don’t need sunscreen. In practice, brown skin is quicker to tan, darken and form pigment after sun, heat, pimples or a scratch. That is why daily sunscreen is central to treating and preventing dark spots and melasma.
How to read a sunscreen label
| On the label | What it means | What to look for |
|---|---|---|
| SPF 30, 50, 50+ | Protection against UVB (burning). SPF 30 filters about 97%, SPF 50 about 98%. | SPF 30 or higher for daily use |
| PA+ to PA++++ | Protection against UVA (tanning, pigmentation, ageing). More plus signs, more protection. | PA+++ or PA++++ |
| Broad spectrum | Protects against both UVB and UVA | Yes |
| Tinted / with iron oxides | The tint also blocks some visible light | Useful for melasma and dark patches |
| Water resistant (40 or 80 minutes) | Stays effective for that long while swimming or sweating | For sport, swimming, long hours outdoors |
| Non-comedogenic / oil-free | Less likely to block pores | For oily and acne-prone skin |
A higher number on the front is less important than three things: broad spectrum, enough of it, and reapplying.
Mineral or chemical?
Sunscreen filters come in two families, and both work well:
- Mineral (inorganic) filters, zinc oxide and titanium dioxide, sit on the surface and scatter and absorb light. They suit sensitive skin, young children, pregnancy and skin healing after a laser or peel. Older versions left a white cast on brown skin; tinted mineral sunscreens solve that and add visible-light protection.
- Chemical (organic) filters absorb UV and turn it into a small amount of heat. They tend to feel lighter and spread more easily, which many people with oily skin prefer.
Many modern sunscreens combine both. If one stings, itches or breaks you out, try the other type rather than giving up on sunscreen altogether.
Choose by your skin
- Oily or acne-prone skin: a gel, light fluid or “matte” sunscreen labelled oil-free and non-comedogenic. A moisturising sunscreen can replace your moisturiser in the morning.
- Dry skin: a cream or lotion sunscreen, over or instead of a moisturiser.
- Melasma, dark patches or marks after pimples: a broad-spectrum, tinted sunscreen with iron oxides, SPF 30 or more, used daily, indoors too if you sit near a window. In a trial in melasma patients, results were better when visible light was blocked as well as UV.
- Sensitive or post-procedure skin: a fragrance-free mineral sunscreen. After a laser, peel or Q-switch toning session, follow your dermatologist’s aftercare advice.
- Children: keep babies under six months out of direct sun and use shade and clothing rather than sunscreen. From six months, a broad-spectrum mineral sunscreen of SPF 15 or more, reapplied every two hours outdoors, is a common recommendation.
Our own SPF 50+ Ultra Matte Sunscreen was made for oily skin in the Rajkot heat, but any broad-spectrum sunscreen you are happy to wear every day will do the job.
How much, and how often
Most people apply a quarter to half of the amount sunscreen is tested with, which gives far less protection than the label promises.
- Face and neck: two full finger-lengths of sunscreen (squeeze a line along the index and middle fingers). Don’t forget the ears, the sides of the neck and the back of the hands.
- Whole body, for a day at the beach or a long outdoor event: roughly a shot glass.
- When: as the last step of your morning skincare, before make-up, and ideally about 15 minutes before going out.
- Reapply every two to three hours when you are outdoors, and after swimming, heavy sweating or wiping your face. On an office day indoors, one generous morning layer covers most needs.
- Reapplying over make-up is easier with a sunscreen stick, a powder sunscreen or a spray, applied generously.
- At night, wash it off with a gentle cleanser. Water-resistant sunscreens may need a second cleanse.
Keep sunscreen out of hot cars and direct sun, and replace it after its expiry date or if it has separated or changed smell.
Sunscreen in the monsoon
Clouds feel protective, but much of the sun’s UV still passes through cloud, and UVA passes through glass. Sweat and rain wash sunscreen off faster, and humid weather makes heavy creams feel unbearable, so many people stop altogether.
What helps in the monsoon:
- switch to a light gel or fluid that doesn’t feel sticky in the humidity;
- choose water-resistant sunscreen if you ride a two-wheeler or are outdoors a lot;
- carry a stick or powder sunscreen to reapply after getting wet;
- keep up the daily habit, especially if you are being treated for pigmentation, because a few weeks of unprotected sun can undo months of progress.
More on monsoon skin, including fungal rashes that flare in the humidity: monsoon skincare in Gujarat.
Sunscreen is not the whole of sun protection
Sunscreen works best alongside other simple habits:
- Shade during the strongest sun, roughly 11 am to 4 pm in a Saurashtra summer.
- A wide-brimmed hat, sunglasses and a dupatta or scarf for the face and neck, and full-sleeved cotton clothing for long hours outdoors.
- A full-face helmet visor or a scarf on a two-wheeler; the cheeks and forehead take most of the sun on a daily commute.
Common myths
- “I’m indoors all day, so I don’t need it.” Away from windows, the need is small. Near a window, or if you have melasma, daily sunscreen still helps.
- “Sunscreen makes skin darker.” It doesn’t. A tan from sun exposure that sunscreen didn’t fully stop can. A white cast can make skin look grey; a tinted sunscreen avoids this.
- “Higher SPF means I can stay out longer.” No sunscreen blocks everything. Reapplying and shade still matter.
- “SPF in my BB cream is enough.” Usually it isn’t, because the layer is too thin. Use sunscreen underneath; our BB Cream SPF 25 is made to go on top of a sunscreen on days outdoors.
- “Sunscreen causes vitamin D deficiency.” In everyday use the effect appears small. Ask your doctor about testing if you are concerned.
When to see a dermatologist
See a dermatologist if:
- a tan or dark patch hasn’t faded after two to three months of good sun protection;
- you have melasma or patches that keep coming back;
- every sunscreen you try stings, itches or causes breakouts;
- you get a rash on sun-exposed skin after being in the sun, or while taking a new medicine;
- a mole or spot changes in size, shape or colour, bleeds or doesn’t heal.
For tan, pigmentation and melasma, sunscreen is the base of every plan, and the plan itself may add prescription creams, peels or laser. See pigmentation and melasma treatment in Rajkot.
The short version
Pick a broad-spectrum sunscreen, SPF 30 or more, PA+++ or more, in a texture you like enough to wear every day. If you have melasma or dark patches, choose a tinted one. Use two finger-lengths for the face and neck every morning, rain or shine, and reapply every two to three hours outdoors. A sunscreen used generously and daily does more than any expensive cream.
