Facial swelling after a laser treatment is a normal part of healing, and it typically peaks within the first 24 to 48 hours before gradually subsiding over three to four days. The most effective way to reduce it is a combination of cold compresses, sleeping with your head elevated, and avoiding foods and products that can make inflammation worse. Here’s what to do at each stage of recovery.
Start With Cold Compresses Right Away
Cold is your single best tool in the first day or two. It constricts blood vessels near the skin’s surface, which slows the flow of fluid into swollen tissue. Stanford Health Care recommends applying a cold compress or ice pack for 10 to 20 minutes per hour during the first 12 to 24 hours after a non-ablative procedure (treatments like Fraxel that leave the skin surface intact). For ablative procedures (like CO2 laser resurfacing, which removes outer layers of skin), the guideline is 10 minutes at a time, once or twice per hour.
Never place ice directly on treated skin. Wrap it in a soft cloth or use a gel pack. Your skin is more vulnerable to cold injury right after laser treatment, so the breaks between applications matter just as much as the icing itself. After the first 24 hours, you can taper off to using cold compresses as needed whenever swelling feels uncomfortable.
Sleep Elevated for the First Few Nights
Lying flat lets fluid pool in your face overnight, which is why many people wake up the morning after a laser treatment looking significantly more swollen than they did the evening before. Elevating your head to about a 45-degree angle helps gravity pull that fluid away from your face. Stack two or three pillows, or use a wedge pillow to keep your upper body propped up. Most providers recommend maintaining this position for at least the first 24 hours, though keeping it up for two to three nights can make a noticeable difference in how quickly swelling resolves.
Consider an Over-the-Counter Antihistamine
Laser energy triggers a histamine response in the skin, which contributes to swelling, redness, and itching. Many dermatology practices recommend taking a daily antihistamine like cetirizine (Zyrtec) or loratadine (Claritin) during the first few days of recovery. Diphenhydramine (Benadryl) is another option, especially at bedtime, since its drowsiness side effect can help you sleep through discomfort. Some clinics also suggest famotidine (Pepcid AC), which blocks a different type of histamine receptor and can work alongside the other antihistamines for added relief.
Watch Your Diet in the First Few Days
Salty foods encourage your body to retain water, which directly worsens facial swelling. Cutting back on sodium for the first three to five days after your procedure can help. Stick to lighter, lower-sodium meals and drink plenty of water. It sounds counterintuitive, but staying well-hydrated actually helps your body flush excess fluid rather than hold onto it.
Alcohol is another contributor. It dilates blood vessels and promotes inflammation, both of which amplify swelling. Avoid it for at least the first several days, and longer if you’re still taking any pain medication.
Avoid Active Skincare Ingredients
Your skin’s barrier is compromised after laser treatment, and ingredients that are normally beneficial can cause irritation and worsen inflammation. Retinoids, glycolic acid, salicylic acid, vitamin C serums, and any exfoliating products should be set aside until your skin has fully healed. For non-ablative treatments, that’s usually one to two weeks. For ablative resurfacing, your provider may advise waiting several weeks before reintroducing active ingredients.
During recovery, keep your routine simple: a gentle cleanser, a plain moisturizer (many providers recommend petroleum-based ointments for ablative procedures), and broad-spectrum sunscreen once you’re cleared to apply it. Fragrance-free products are less likely to trigger additional inflammation.
What About Arnica and Bromelain?
You’ll find arnica (a plant extract) and bromelain (an enzyme from pineapple) recommended in many online recovery guides. The evidence is mixed. A systematic review of clinical trials found that five out of seven studies on bromelain showed some improvement in post-procedure swelling and bruising, while only four out of 13 studies on arnica showed a benefit. Neither supplement has strong enough data for researchers to confidently recommend it. They’re unlikely to cause harm if you want to try them, but cold compresses and elevation remain far more reliably effective.
How Long Swelling Lasts by Laser Type
The intensity of your treatment determines how much swelling to expect and how long it sticks around. Non-ablative lasers (like clear and brilliant, pulsed dye, or non-ablative fractional treatments) cause milder swelling that often resolves within one to three days. You may look slightly puffy, similar to a mild sunburn.
Ablative lasers (CO2 and erbium resurfacing) go deeper and cause more significant swelling. Expect the worst of it in the first two days, with most swelling subsiding by day three or four. Some residual puffiness, especially around the eyes, can linger for a week or slightly longer. If swelling hasn’t started improving by day four or five, or if your provider prescribed a short course of oral steroids for more aggressive treatments, that’s a sign the inflammatory response was substantial but still within the range of normal recovery.
When Swelling Signals a Problem
Normal post-laser swelling is diffuse, meaning it spreads evenly across the treated area. It gradually improves each day and responds to cold and elevation. Infection, by contrast, looks and feels different. Watch for these warning signs:
- Spreading redness that expands beyond the treated area or develops distinct borders
- Increasing pain that worsens after the first 48 hours instead of improving
- Fever above 100°F (38°C), chills, or body aches
- Warmth and tenderness concentrated in one area, especially if the skin looks pitted or lumpy
- Fluid-filled blisters that appear days after the procedure rather than immediately
These can be signs of cellulitis, a bacterial skin infection that requires antibiotics. If your swelling is getting worse rather than better after the second day, or if you develop any flu-like symptoms, contact your provider promptly rather than waiting it out.