Can I use Skin1004 Centella Ampoule with Paula's Choice BHA?

Which Centella Ampoule do you mean?

This answer covers the signature Centella Ampoule, not the Tone Brightening Capsule, Tea Trica Relief or other ampoules with different formulas. SKIN1004 sells several different ampoules, so 'the SKIN1004 one' is doing more work than a product name should. The signature formula lists water, glycerin, butylene glycol, Centella asiatica extract, 1,2 hexanediol, cellulose gum and ethylhexylglycerin.23

What does each product do?

Salicylic acid helps unplug blocked pores and reduce the swelling and redness of acne. The Centella Ampoule provides hydration and soothing care, with a watery texture that spreads easily and absorbs without stickiness. The two products have different jobs, which is more useful than asking both bottles to be the entire routine.12

How should you layer them?

1. 1Cleanse gently without scrubbing. A harsh cleanser can irritate skin rather than help control oil.
2. 2Apply your Paula's Choice BHA following that bottle's preparation, amount and application directions. Keep salicylic acid away from your eyes, nose and mouth.
3. 3Apply an appropriate amount of Centella Ampoule evenly over the skin. SKIN1004 tells you to pat it to promote absorption.
4. 4Finish with moisturizer. If you have acne, look for a moisturizer labeled oil free, noncomedogenic or won't clog pores.
5. 5For a daytime routine, use sunscreen before going outdoors. Choose broad spectrum protection with SPF 30 or higher.

How often should you use the BHA?

Use your specific BHA label to set frequency rather than borrowing a schedule from another Paula's Choice product. Salicylic acid products have different strengths and directions. When starting salicylic acid, test a small amount on one or two small treatment areas for three days. If there is no reaction or discomfort, proceed as directed. Starting less often can help with early dryness or irritation; increase gradually only as your skin adjusts.1

Do you still need moisturizer?

Keep a moisturizer in the routine, especially if your skin feels dry. Salicylic acid can dry and irritate skin, and daily moisturizer can help skin tolerate acne treatments. Oily skin needs moisture too. For acne prone skin, the moisturizer's labeling is a more useful buying guide than assuming every hydrating product serves the same purpose.45

What should you expect?

Expect the ampoule to serve as the hydration step, not the pore clearing treatment. Salicylic acid can take several weeks or longer to deliver its full benefit. Do not increase BHA frequency to rush that process. If irritation develops, reduce use or stop rather than adding more exfoliation.124

When should you be careful?

Do not apply salicylic acid to broken, red, swollen, irritated or infected skin. Check with your doctor before combining it on the same skin with tretinoin, benzoyl peroxide or other topical medicines. If you are pregnant, planning pregnancy or breastfeeding, discuss salicylic acid use with your doctor.1

Contact your doctor if irritation or stinging is severe or does not go away. Stop salicylic acid and seek immediate medical help for hives, throat tightness, difficulty breathing, faintness or swelling of the eyes, face, lips or tongue.1