Why is it that some weeks your skin is plump and smooth, while other weeks it gets oily, breaks out, and looks dull despite following the exact same skincare routine? In reality, a woman’s skin constantly changes in response to hormonal fluctuations during each phase of the menstrual cycle. By understanding this mechanism, women can easily ‘catch the exact needs’ of their skin to adjust their care routine accordingly, thereby maintaining a fresh, radiant, and confident appearance every day. Let’s dive into the details with KIGO in the article below.
1. The 4 Hormonal Phases and Their ‘Fluctuations’ on the Skin
Female hormones are like a ‘sine wave’ continuously fluctuating every month. The rise and fall of the hormone trio: Estrogen, Progesterone, and Testosterone – directly impact the epidermal structure, moisture levels, and sebaceous gland activity:
- Week 1 – Menstruation Phase (Low hormones): From day 1 to day 5 of the cycle, both Estrogen and Progesterone drop to their lowest levels. This deficiency weakens the skin’s protective lipid barrier, reducing its natural water-retention capacity. As a result, the skin becomes extremely sensitive, easily irritated, and prone to noticeable dryness, flakiness, and dullness.
- Week 2 – Follicular Phase (Rising Estrogen): From day 6 to day 12, the body accelerates Estrogen production. This hormone is responsible for stimulating the natural synthesis of Collagen, Elastin, and Hyaluronic Acid in the dermis. This is considered the ‘golden time’ when the skin looks its absolute best during the month: the surface is plump, hydrated, highly elastic, with smoothly minimized pores.
- Week 3 – Ovulation Phase (Estrogen peaks & drops): Around day 13 to day 16, Estrogen reaches its peak and then suddenly drops, making way for Progesterone to begin rising. This sudden fluctuation mildly stimulates the sebaceous glands, causing the skin to start producing oil in the T-zone, creating favorable conditions for dead skin cells to accumulate and clog pores.
- Week 4 – Luteal Phase (Rising Progesterone): From day 17 to day 28, Progesterone surges and peaks. This hormone enlarges pores and stimulates the sebaceous glands to operate at maximum capacity. The sticky excess oil combined with P. acnes bacteria triggers inflammatory responses, forming painful hormonal acne breakouts around the chin and jawline right before menstruation.

Thus, the skin’s 28-day journey is essentially a chain of biological reactions strictly controlled by the endocrine system. Understanding the rise and fall of these hormones not only decodes why the skin acts unpredictably week by week but also serves as the core scientific basis for proactively changing your skincare strategy: adapting to your hormones rather than fighting them, thereby stopping the risk of inflammatory acne or severe dryness before they even surface.
2. The Ideal Skincare Routine for Each Phase
To maintain a balanced state for the skin, your care routine needs to flex and adapt to every hormonal shift:
2.1 Week 1 – The Sensitive & Dry Phase: Focus on Hydration and Recovery
When Estrogen levels hit rock bottom, the skin needs a minimalist protocol, eliminating harsh active treatments and fully focusing on compensating for lost moisture and repairing the protective lipid membrane with two core steps:
- Ampleur Luxury White Lotion AO II: After gentle cleansing, immediately replenishing multi-layered hydrating molecules from this lotion instantly soothes tightness and irritation. This product acts as a paving step, deeply hydrating and softening the stratum corneum to prepare for the following nourishing steps.

- Ampleur Luxury White Active Clear D Serum: Next, the skin needs to be fortified with a serum rich in powerful recovery actives like HA and Ceramides. These nutrients will weave in to heal the gaps between damaged skin cells caused by Estrogen deficiency, lock in moisture, and restructure the biological membrane to protect the skin from external aggressors.

2.2 Week 2 – The ‘Good Skin’ Phase: Focus on Nourishment and Maintenance
This is when the skin is healthiest and has the highest capacity to absorb nutrients thanks to abundant Estrogen. Therefore, maximize this period to boost intensive whitening actives, prevent pigmentation, and combat aging:
- Ampleur Luxury White Emulsion-Gel EX: Adding this premium gel-cream to your night routine is the optimal solution. With a formula optimizing the combination of top-tier brightening actives, this product nourishes new skin cells in their healthiest state right from the root, accelerating structural protein synthesis to double the sustainable plump and smoothly white effect.

2.3 Week 3 – The Oily Phase: Focus on Deep Cleansing and Anti-inflammation
Increased sebum secretion is a signal to tighten your cleansing routine to prevent the risk of clogged pores by utilizing the Double Cleansing method every evening:
- Ampleur Luxury White Cleansing Milk N: In the first step, use this smooth, liquid cleansing milk to gently dissolve sticky excess oil, sunscreen, and dirt accumulated throughout the day without causing harsh friction or damaging the skin surface.

- Ampleur Luxury White Washing Foam N: In the next step, use this facial cleanser with its dense, micro-fine foam to completely clear out remaining impurities and debris deep within the hair follicles, maintaining an ideally clear and smoothly clean surface.

2.4 Week 4 – The Inflammatory & Hormonal Acne Phase: Focus on Internal Hormonal Regulation
When Progesterone peaks, all topical measures merely act to temporarily extinguish symptoms. To completely resolve the root of hormonal acne, you need a protocol that re-establishes hormonal balance and strongly fights inflammation from within the body using a trio of solutions from the KIGO ecosystem:
- Lhamo Inner Rose Supplement: An oral supplement that supports the balancing of natural Estrogen, minimizing erratic hormonal fluctuations before your cycle. This is a root-targeting solution that helps proactively block the signals that overstimulate sebaceous glands – the core cause of hormonal acne.

- Lhamo Premium Omega-3 Krill Oil: Provides a high-quality dose of Omega-3 fatty acids capable of extinguishing internal inflammatory responses. As a result, this product helps rapidly reduce the swelling and pain of cystic and pustular hormonal acne, soothing damaged skin.

- Eikenbi Nano Fucoidan Turmeric Premium Liquid: Utilizes ultra-fine Nano particle technology to help the body maximally absorb the active ingredient Curcumin, combined with Fucoidan to strengthen the antioxidant network. This product supports liver detoxification and provides strong internal antibacterial properties, accelerating cell recovery speed and preventing dark scars after acne clears.

3. Conclusion
Syncing your skincare with your menstrual cycle represents the pinnacle of the scientific and personalized skincare trend. When we stop imposing a rigid formula and start listening to hormonal changes, our skin receives care precisely when and how it needs it most. The rhythmic combination of external intensive cleansing and hydration solutions with internal specialized hormonal regulation protocols from the KIGO ecosystem will be the master key to blocking the risks of inflammatory acne and pigmentation, allowing you to confidently master your beauty regardless of temporal fluctuations.

