This study is being done to help Capital Tobacco improve their natural and original cigarillos products.

You may be eligible for this study if you meet the following criteria.

Inclusion Criteria:

• Ages 21-34
• Smoke cigarillos
• Speak English
• Not pregnant, planning to become pregnant, or currently breastfeeding
• Able to abstain from nicotine/tobacco products or smoked cannabis for at least 12 hours prior to each smoking session

Participation includes four in-person visits at the Oklahoma University Health Sciences Center over 3–4 weeks (about 5 total hours):

1. Visit 1 (90 minutes):

   • Provide informed consent

   • Complete a baseline survey

2. Visit 2 (45–60 minutes):

   • Arrive after 12+ hours without nicotine or cannabis

   • Answer questions about your usual cigarillo brand

   • Smoke your own brand while researchers measure your smoking pattern and chemical exposure

3. Visits 3 & 4 (45–60 minutes each):

   • Arrive after 12+ hours without nicotine or cannabis

   • View advertisements for one of the two new products

   • Smoke the study cigarillo and complete the same set of measures

All visits take place in OKC, OK.

Participants can earn up to $450 for completing all sessions.

• Visit 1: $50

• Visit 2: $75

• Visit 3: $100

• Visit 4: $150

• Ineligible after Visit 1: $20

• $20 bonus for attending your first visit within 7 days of screening

• $10 travel compensation at each visit ($40 total)

Participants also receive a small prize (up to $10 value) at each completed visit and are entered into a quarterly raffle for a $100 gift card. (Participants may only win once and must complete all study sessions to remain eligible.)

There is no cost for you to participate in our research study.