PHA for Sensitive Skin: Pairing a Gentle Exfoliant With Barrier Care
A two-step evening routine that uses a PHA serum to resurface without stripping, then seals with a ceramide cream.
If you want to introduce a PHA exfoliant to sensitive skin without wrecking your barrier, the approach is straightforward: apply the A-CICA 365 Soothing Relief Serum on designated evenings, then follow with the Atobarrier 365 Cream. Two nights a week is a gentle starting point that helps avoid tipping into irritation.
Who This Routine Is For
This pairing is built for anyone who wants the resurfacing benefits of a PHA exfoliant on sensitive skin without the redness, tightness, or rebound dryness that harsher exfoliants tend to cause. If your skin flares easily, sits on the drier side, or is currently recovering from over-exfoliation, this is a useful place to start.
It also works well as a sustainable weekly habit for combination or normal skin types that simply prefer a gentler approach. The two products involved are fragrance-free. If you are pregnant, breastfeeding, recovering from a procedure or using prescription skincare, check the brand's current guidance and ask your doctor.
Why PHA Works Here
Gluconolactone is the PHA in the A-CICA 365 Soothing Relief Serum, and it behaves differently from AHAs like glycolic or lactic acid. Its larger molecular size means it penetrates the skin more slowly, making it less likely to cause the immediate sting or flush that some people experience with traditional chemical exfoliants. It also draws moisture as it works, so you are not trading hydration for exfoliation.
The serum is formulated at pH 4.5, which keeps it in the mildly acidic range that skin naturally prefers. That pH level matters: it is low enough to support gentle exfoliation and help maintain the skin's acid mantle, but not so aggressive that it disrupts a compromised barrier. Niacinamide and Zinc PCA in the formula add a calming dimension, and Sodium Hyaluronate contributes immediate hydration.
The Order and Timing
Use this pairing in your PM routine only, two nights a week. Pick evenings that do not involve retinol or retinal — layering an exfoliant acid over a retinoid, even a mild one, raises the chance of irritation without adding much benefit.
The order is: cleanser → toner (optional) → A-CICA 365 Soothing Relief Serum → Atobarrier 365 Cream.
Apply the serum after your toner, taking a small amount and spreading it evenly across the face. The texture is a lightweight liquid that absorbs quickly — you should not need to wait long before moving on. Once the serum has settled into the skin, apply the Atobarrier 365 Cream as your final step, smoothing a small amount across the face and pressing gently so it makes full contact.
What Each Product Does in This Routine
The A-CICA 365 Soothing Relief Serum handles the active work: Gluconolactone resurfaces, the mildly acidic pH supports barrier function, and the four-type Cica complex works alongside Zinc PCA to calm any temporary redness that can sometimes follow exfoliation. The finish is natural rather than occlusive, which is why it sits comfortably under a cream.
The Atobarrier 365 Cream then does the recovery work. Its encapsulated ceramide lipid complex — which includes Hydroxypropyl Bispalmitamide MEA and Cholesterol — is designed to reinforce the barrier that any exfoliant, however mild, is putting under mild stress. Phytosphingosine and Squalane round out the formula for long-lasting hydration through the night. Applied over the serum, it seals in everything the skin has absorbed and gives the barrier the support it needs to recover while you sleep.
