6 minute read
By the end of August, most of us are dealing with some version of the same thing: hair that feels rough and looks duller than it did in June, and skin that has lost its evenness. The good news is that late summer is the ideal moment to start repairing, because UV levels are falling and your skin can finally tolerate the ingredients that do the heavy lifting.
What Does Summer Actually Do To Your Hair?
UV light breaks down keratin, the protein that makes up the bulk of each strand. At the same time, salt water and chlorine draw moisture out of the hair and lift the cuticle, which is the protective outer layer. Once the cuticle is raised, hair loses moisture faster, tangles more easily and reflects less light, which is why it looks flat rather than glossy.
If your hair is coloured, there is a second problem. A lifted cuticle cannot hold colour molecules properly, so tones fade and blondes drift towards brassiness. Chlorine can also react with the minerals in hard water and leave a dulling film on the hair.
What Does Summer Actually Do To Your Skin?
Sun exposure triggers melanin production, which is your skin's defence mechanism. The trouble is that it rarely happens evenly, so you are left with patchy tone, freckling and darker marks where old blemishes used to be. Heat and sweat can also disrupt the skin barrier, leaving skin simultaneously oily on the surface and dehydrated underneath.
Pigmentation is also slow to show. Marks that appear in September often relate to sun exposure weeks earlier, which is why the post-summer period matters so much. For more on this, our guide on how to get rid of hyperpigmentation goes into more detail.
Start With Repair, Not Resurfacing
The instinct after a summer of sun is to reach straight for strong acids and high-strength retinoids. That usually backfires. Sun-exposed skin and hair have both lost structural integrity, and stripping them further tends to cause irritation and breakage rather than renewal.
A better sequence is to spend the first two weeks rebuilding, using bond-repairing haircare and barrier-supporting skincare. Once your skin feels comfortable and your hair no longer snaps when you brush it, you can reintroduce actives such as vitamin C and retinal, and start any resurfacing from around week four. Our article on how to fix a damaged skin barrier is a useful companion read here.
Haircare For Post-Summer Repair
Olaplex No.3 PLUS Complete Repair Treatment
A pre-shampoo treatment that works on the bonds inside the hair rather than simply coating the outside. It is the sensible first step if your hair feels stretchy when wet or rough when dry, and it is the one product worth using before you judge how much damage you are actually dealing with.
Kérastase Bain Après Soleil Shampoo
Enriched with coconut water, this after-sun shampoo is designed to remove chlorine, salt and sand residue gently. If you have been swimming regularly, use it for the first few washes to clear build-up before moving back to your usual shampoo.
Kérastase Chroma Absolu Bain Chroma Respect
For colour-treated hair, this gentle cleansing shampoo is formulated with glycerin, amino acids and hyaluronic acid to cleanse without stripping tone. It is a good long-term choice once the initial clarifying phase is done.
Olaplex No.7 Bonding Oil
A lightweight finishing oil that adds shine and provides heat protection. Because sun-damaged hair has a raised cuticle, a small amount of oil on damp mid-lengths and ends helps to smooth the surface so hair reflects light properly again.
Skincare For Post-Summer Repair
La Roche-Posay Cicaplast Baume B5 Repairing Balm
Designed to support the skin's natural recovery process while respecting the microbiome. Use it as an overnight mask on areas that feel tight or look flaky for the first week or two, before you add anything more active.
SkinCeuticals Phloretin CF Serum
A morning antioxidant serum combining 2% phloretin, 10% pure vitamin C and 0.5% ferulic acid. It is well suited to post-summer skin because it targets uneven tone and helps defend against further free radical damage during the day.
Medik8 C-Tetra Advanced
A gentler route into vitamin C, using 20% oil-soluble vitamin C for brightening without the sting some people experience from pure ascorbic acid. A sensible option if your skin still feels reactive after a lot of sun.
When Should You Restart Retinol After Summer?
Early autumn is the classic window, and there is a reason for it. Retinoids can increase sun sensitivity and their results are easily undone by continued UV exposure, so the shorter, weaker days of September onwards suit them far better.
Restart at a lower strength than you finished with in spring, twice a week, and build up from there. If you stopped using retinol altogether over the summer, treat yourself as a beginner again rather than picking up where you left off. Our guide on what percentage retinol you should use will help you choose.
Four Post-Summer Mistakes To Avoid
1. Booking A Bleach Appointment Straight Away
Sun-weakened hair does not respond well to lightening. Give it two to three weeks of bond repair and conditioning treatments first, and your colourist will get a better and safer result.
2. Stacking Every Active At Once
Vitamin C in the morning and retinal at night is plenty to begin with. Adding acids, exfoliants and peels in the same fortnight is how people end up with a compromised barrier in October.
3. Assuming Oily Skin Does Not Need Moisture
Heat-stressed skin is often oily and dehydrated at the same time. Skipping moisturiser tends to make oil production worse, not better. Our article on dry versus dehydrated skin explains the difference.
4. Putting The SPF Away
UVA levels stay meaningfully high well into autumn, and UVA is the wavelength most associated with pigmentation and premature ageing. If you are treating sun damage while skipping daily protection, you are working against yourself.
Do You Still Need SPF In September?
Yes, and particularly if you are using vitamin C or a retinoid. A lightweight daily option such as La Roche-Posay Anthelios UVAir SPF50+ is easy to keep in a routine year-round, while the Anthelios UVMune400 Tinted Fluid SPF50+ doubles as light coverage while pigmentation evens out.
For more on this, read why you still need sun protection in winter.
How Long Until You See A Difference?
Hair usually feels better after the first bond treatment and looks noticeably improved within two to three washes. Skin texture and hydration tend to improve within two weeks. Pigmentation is the slowest to shift and generally takes eight to twelve weeks of consistent vitamin C, retinoid use and daily SPF, so start now and be patient with it.