The week before your period, something shifts. Maybe it's dryness, or unexpected congestion, or a kind of grey flatness to your complexion that wasn't there before. Then it clears — and then it comes back again, predictably, the following month.
This isn't your skin being unpredictable. It's your skin reading a very consistent internal signal. The frustration usually comes from treating each phase as a separate problem, rather than understanding it as part of a single cycle.
Hormones and the skin across the cycle
Oestrogen and progesterone move in a rhythm across the menstrual cycle — and skin behaves differently at each phase because it's genuinely responding to a different hormonal environment.
In the follicular phase (the first half of the cycle), rising oestrogen tends to support skin hydration and collagen production. Many people notice their skin looks and feels better during this window.
After ovulation, progesterone rises. For some people, this phase brings increased oil production and a tendency toward congestion. As both hormones drop in the days before menstruation, inflammation can increase — often showing up as sensitivity, dullness, or breakouts.
Why oestrogen dominance changes this pattern
When oestrogen is relatively dominant compared to progesterone — whether because progesterone is low, or oestrogen is high, or both — the cyclical skin changes can become more pronounced.
This isn't always obvious from the outside. It doesn't necessarily mean periods that are heavier or more painful than average. It can present simply as skin that fluctuates more dramatically than you'd expect, or that seems to respond to phases of the cycle that shouldn't theoretically be the most disruptive.
Oestrogen also influences melanin production. Hyperpigmentation and melasma that worsen or appear during certain phases of the cycle often have a hormonal driver — and one that won't respond to topical brightening alone.
Working with the cycle rather than against it
The most useful shift in thinking isn't finding the product that works across all four phases — it's recognising that the skin genuinely needs something different at different points.
The follicular phase tends to tolerate a wider range of inputs. The luteal phase (post-ovulation) often calls for less — less actives, less stripping, more focus on the barrier. The pre-menstrual phase tends to be the most reactive window and usually isn't the right time to introduce anything new or aggressive.
Tracking these shifts — even for two or three cycles — can make the pattern legible. Once you can see it, you can work with it.
Pattern Note
This experience is frequently associated with B-Type (Oestrogen Dominant) patterns. B-Types tend to have skin that is highly responsive to internal hormonal rhythms — the cycle isn't a trigger, it's the primary driver. The quiz maps where you sit in this pattern.
Take the quiz — discover your skin code →Related
Educational only. This content is for informational purposes and does not constitute medical advice, diagnosis, or treatment. Skin patterns vary between individuals. If you have concerns about a skin condition, consult a qualified healthcare professional.