---

All answers having "Freshen" as clue:

3 Character Answers:

---

AIR

RHO



4 Character Answers:

---

PERK



5 Character Answers:

---

REINK

RENEW

TOPUP



6 Character Answers:

---

AERATE

AIROUT

PERKUP

REVIVE



8 Character Answers:

---

DRYCLEAN



9 Character Answers:

---

DEODORIZE