Simply add your favorite essential oil!


We are proud to offer FREE shipping in the USA. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectations.
Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.
Shipping time varies by manufacturer. Shipping times have been getting better over the years. We try to find your products with fewer shipping days as possible. We will provide as much information in the description area as we can about the shipping times per each product. These are our estimates*:
Location | *Estimated Shipping Time |
United States | 5-30 Business days. We will try to note specific delivery times on each product page. |
Yes, you will receive an email with a tracking number once your order is shipped but sometimes due to free shipping tracking is not available. If you haven’t received tracking info within 5 days, please contact us.
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.
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All orders can be canceled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be canceled.
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
We do not issue the refund if:
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorize you to do so. You will be responsible for paying your own shipping costs for returning items. Shipping costs are non-refundable.
On all orders in the USA
info@4supercars.com
Worry-free shopping
Wonderful product! One word of advice is to put more than 1 or 2 drops on the felt pan (don't soak it)..I place 3 or 4 (depending on the oil) and it works for days and days. Wonderful during stressful traffic.
I expected a little more out of this product. I have a sedan and as the driver I get infused but not the kids in the back seat.
Love this product! Needs to be refreshed at least once a week, but my car smells so good!
I got this diffuser and agree that the top doesn't stay on very well. More importantly, I learned the hard way not to leave it in my "cigarette lighter" all the time because, after a long weekend, I got in the car and it didn't start....the thing had slowly but surely drained my battery. I now take it out before I get out of the car.
I like this diffuser! Product arrived in a timely manner, it was packaged well. Easy to use and plug in.
I use this everyday because my job is to drive handicapped people around and it is very necessary! My car smells great and everyone is happy.
I like it! Was a gift and seems to work well. Makes car smell fresh and clean.Thanks
I love being able to determine what scent I smell in my car. I can use any essential oil I like - whatever I am in the mood for. The scent lasts a long time and is subtle, not overwhelming. I use an oil called "Joy" and I feel uplifted every time I get in my car. I have given many as gifts, too! I even love the blue light it emits.
Love this! Really strong smell and you don't have to keep buying air filters, just add a couple drops and you're good to go!
Plug this into the “cigarette “ lighter. Put some drops on the pad. Nice fragrance comes out.
It works and does what it says it does. It does not put off a strong scent. I use it with my essential oils to relax in the car but not as a car deodorizer/ air freshener.
It works great in my truck, will get other ones for other cars and family members
After reading the other reviews I decided I would write one....I love the design ...simple and clean...the lid does come off very easily and the smell seemed to work, although faint, Just like any diffuser you have to add oils regularly ...people get into my car and always comment how good it smells and what is that...I am ordering 2 more (gifts) for friends that loved it. Yes, the top comes off but make sure you turn the lid so it screws in a bit. I load mine up with oils and it lasts for a number of days. Short or long trips don't matter. My car smells great ! I use a scent that is rather strong so there is always a scent in my car. After I bought my first one, I tried a couple of others ...I love how sleek this one is so I am ordering more!
Works great! Would buy again! Items are described and arrived quickly.
Thanks for this wonderful device! I feel good about replacing synthetic (and possibly harmful) car fresheners with essential oils... particularly during long drives.