Defence by Day, Repair by Night: The Science Behind the AM and PM Protocol

Most people treat morning and evening skincare as the same job done twice: cleanse, apply serum, moisturise, repeat. The Aliangé AM and PM Protocols are built on a different premise. Skin is not doing the same work at 7am as it is at 11pm, so the products designed for each window are not interchangeable.

Two different jobs

During the day, skin is under attack. UV radiation degrades collagen in the extracellular matrix and depletes the skin's own antioxidant reserves. Cortisol, which peaks roughly 30 minutes after waking and stays elevated through the day, adds to the oxidative load by suppressing the enzymes skin relies on to neutralise free radicals. The daytime job is defence: block what you can, and neutralise what gets through.

Overnight, the priorities reverse. Research on skin's circadian rhythm shows epidermal cell proliferation running up to 30 times higher at night than during the day, with DNA repair mechanisms also peaking overnight to correct UV-induced damage from the day before. The skin barrier also becomes more permeable at night, which increases water loss but also means active ingredients penetrate more effectively during this window. The overnight job is repair: rebuild what the day wore down, while the skin is actually equipped to do it.

This is not a marketing distinction. It is why the AM Protocol contains no retinol or acids, and why the PM Protocol contains no SPF.

The AM Protocol: built for defence

The AM Protocol is four steps, each doing a specific job before you leave the house:

• Daily Devotion Cleanser removes overnight oil and metabolic waste without stripping the barrier, so the active steps that follow can be absorbed properly.
• Biocinamide Serum strengthens the barrier with niacinamide, supporting ceramide levels and reducing water loss. A resilient barrier is the foundation the rest of the protocol depends on.
• Jellyfish Peptide x Antioxidant Serum delivers antioxidant protection, including Kakadu Plum extract, to neutralise oxidative stress as it happens through the day, alongside DNA-repair and collagen-supporting peptides.
• Day Cream SPF 15 seals the sequence with broad-spectrum UV protection. SPF 15 blocks roughly 93% of UVB radiation, a fixed mathematical relationship, not a formulation claim. An Australian trial (the Nambour Trial) associated daily SPF use with a 24% reduction in visible skin ageing over time.

Nothing in this sequence exfoliates or resurfaces. That is deliberate. Retinol and AHAs increase photosensitivity, meaning skin treated with them becomes more reactive to UV exposure. Putting them in a morning routine would work directly against the SPF step meant to protect the skin that same day.

The PM Protocol: built for repair

The PM Protocol is three steps, and it is where the corrective work happens:

• Daily Devotion Cleanser clears the day's sunscreen, makeup and environmental residue, creating a clean base for the actives that follow.
• Brightening Serum combines Oligopeptide-68 with a calibrated AHA blend to address pigmentation and clear surface cell buildup, preparing skin to absorb the final step.
• Ultimate A Night Cream applies micro-encapsulated retinol and bakuchiol overnight, when cell turnover and collagen synthesis are already running at their highest rate. Cupuaçu Seed Butter provides sustained hydration while the retinol works.

The AHA and retinol steps are held for this window specifically because skin is not being exposed to UV while they work. Applying them at night lets the exfoliation and cell-turnover response run without the photosensitivity risk that daytime use would create.

Why the order across 24 hours matters

The AM and PM Protocols are not two unrelated routines. They are a handoff. What the PM Protocol repairs overnight, the AM Protocol has to protect the next day, or the repair gets undone by the next UV exposure. Skip the SPF step and the retinol's work is compromised before it has consolidated. Skip the retinol step and the SPF has less collagen turnover to protect.

This is the same logic behind Aliangé's entire approach: correct sequencing, not a longer ingredient list, is what determines whether a formulation works. A protocol only functions as a protocol if each step is used in its designed window, in its designed order.

Common Questions

Can I use the PM Protocol products in the morning if I'm short on time?
No. The Brightening Serum's AHA blend and the Ultimate A Night Cream's retinol both increase photosensitivity. Using them without the skin's overnight repair window, and without SPF layered correctly, increases irritation risk and works against the AM Protocol's defence job.

Do I need to use both protocols, or can I choose one?
Aliangé's protocols are designed to work together. The AM Protocol protects what the PM Protocol repairs. Using only one addresses half the cycle. If starting with one, the AM Protocol (cleanser, barrier serum, antioxidant serum, SPF) is the non-negotiable minimum for skin exposed to Australian UV levels.

Why does the PM Protocol have three steps and the AM Protocol four?
Each protocol contains only what its window requires. The AM Protocol needs a dedicated SPF step; the PM Protocol does not. The step count reflects the job, not a target number of products.

This content is educational and does not replace individualised advice from Dr Alison Jamieson or your treating practitioner.

Shop the AM Protocol · Shop the PM Protocol · Read more on why retinol and AHAs belong in the PM Protocol