When traveling from India to the United States, there are restrictions on carrying liquids, including perfume, in your hand baggage. These restrictions are in line with the Transportation Security Administration (TSA) guidelines for carry-on baggage. Here’s what you need to know:

1. Quantity Limit: The TSA enforces the “3-1-1” rule, which allows passengers to carry liquids, gels, and aerosols in containers of 3.4 ounces (100 milliliters) or less. These containers must fit into a single quart-sized clear plastic bag. Each passenger is typically allowed one such bag.
2. Packing: If you wish to carry perfume in your hand baggage, make sure the bottle is 3.4 ounces (100 milliliters) or smaller. It should be placed in a resealable plastic bag with your other small liquid items.
3. Security Screening: When going through the security checkpoint, you will be required to remove the plastic bag containing your liquids from your carry-on luggage and place it in a separate bin for X-ray screening. This allows the security officers to examine the contents easily.
4. Duty-Free Purchases: If you purchase perfume from a duty-free shop at the airport, it may exceed the 3.4-ounce limit. In such cases, you are allowed to carry it in your hand baggage, as long as it is sealed in a tamper-evident bag and accompanied by a receipt. Be aware that you might be asked to present the receipt during the security screening process.

It’s important to note that these regulations can change, so it’s recommended to check the latest guidelines from the TSA or the airline you are traveling with before your departure. Additionally, if you have larger containers of perfume or want to carry more than the permitted amount, you can pack them in your checked baggage, as there are usually no quantity restrictions for liquids in checked luggage.